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ENTREPRENEURIAL NETWORKS IN SPAIN (1917-1970): AN ANALYSIS OF INTERLOCKING DIRECTORATES Juan A. Rubio-Mondéjar & Josean Garrués-Irurzun* Presented at the XVIth World Economic History Congress, 9-13 July 2012, Stellenbosch University, South Africa SUMMARY The study of interlocking directorates has been used to analyze the corporate structure of many countries in different periods of history. At the same time, researchers have developed several theories about the nature and functionality of these types of relationships between companies. From the perspective of the firm, two hypotheses have been defended: one, interlocking directorates allow collusive agreements reached, and two, facilitates the cooptation and monitoring, especially relevant to the financial sector. On the other hand, the perspective of class has advocated that interlocks are a tool for maintaining social cohesion of the ruling elite and coordinate political action in defense of their economic interests. Linking with an extensive literature on interlock, this paper incorporates the methodology of social networks analysis to study the Spanish case between 1917 and 1970, with the purpose of evaluating the main assumptions of the theory. KEYWORDS: Business History; Financial System; Interlocking Directorates; Social Networks. JEL-codes: N24, P12, L14, C63 *Department of Economics, Faculty of Economics and Business, University of Granada, Campus Cartuja s/n, 18071 Granada, Spain. jgarrues@ugr.es; jarubio@ugr.es. Tel.: +34 958 249913; fax: +34 958 249995. 1 1. INTRODUCTION The interlocking directorates technique entails the quantitative study of the linkages established between two companies based on the coincidence of the same individual (interlocking director or ID) in several boards of directors. It was firstly used in the US as early as in the early 20th century in an effort to prevent large companies from reaching agreements to restrict competition1. Economists and sociologists have subsequently used this technique to try to understand the relationships between corporate groups and the linkage between elites and the economic power. In the 1960s and 1970s, the study of the business reality based on interlocking directorates became popular in Spain. Based on this technique, research such as that undertaken by Tamames (1961 and 1977), Muñoz (1970) or Roldán, García Delgado and Muñoz (1973)2 showed that the 20th century’s Spanish economy had been under the control of a highly concentrated financial sector. Over the past few years, the development of the network theory and the related new methodological tools have revitalized the research on interlocking directorates. For the Spanish case, authors such as Aguilera (1998) or Rodríguez (2000 and 2003) have analyzed so the current economic structure. Despite the extensive literature on IDs, there is also a critical school of thought based on two arguments. The first calls into question the actual impact of the corporate boards in the decisions of companies – a function that is assigned to managers. From this view, boards would just be the representative bodies of the company before the shareholders and the market, while the concentration of seats from different companies in the same person would merely respond to the search for prestige both for the companies and the directors themselves (Mace, 1971; Koenig, Gogel and Sonquist, 1979; Hirsch, 1982; Hermalin and Weisbach, 2003). The discussion on the effective power is a classic topic and there are no conclusions that can be generalized for different temporal and spatial contexts. The second argument against the study of interlocking directorates is based on the fact that this technique does not allow us to predict the behavior and strategies of the companies (Fligstein and Brantley, 1992), despite the ample evidence proving the opposite (Goodstein and Boeker, 1991; Stearns and Mizruchi, 1993; Haunschild, 1993; Palmer et al., 1995). As it has been seen, both points of criticism can be questioned. We must mention, however, that as it only explains the levels of interlocking the ID analysis leave many unanswered questions related to the corporate behavior, therefore, this work should be completed with qualitative studies. All in all, there is abundant literature on this topic, especially in the fields of Sociology, Management and Economics. In order to explain the presence of the same director in the boards of different companies the theory has developed several interpretations, which have adopted three 1 Reports submitted to the Senate by the Pujo Commission recommended the adoption of the Clayton Act (1914), which banned interlocks among companies within the same sector. A recent review of the theoretical arguments of the Clayton Act regarding the interlocking directorates issue can be seen in Fiorito (2011). 2 These are just the best known. The analyses on interlocking directorates for the Spanish case were carried out earlier by Errandonea (1935) for the electricity sector, and by Muñoz Linares (1952 and 1955) and De la Sierra (1953). 2 perspectives: for the company, director and social class. From the viewpoint of a company or organization, it is advocated that interlocking directorates are a consequence of the strategic needs of the companies. From the director’s point of view, IDs are caused by the own individual ambitions of the individual, who wants to take part in as many boards as possible for personal career reasons. The class perspective considers interlocking directorates to be an instrument that guarantees the survival of the dominant social group3. Within the organizational perspective we find three hypotheses. The first advocates that interlocking directorates are part of a corporate strategy to reach collusive agreements to restrict competition in the market (Pennings, 1980; Burt, 1983). The lack of evidence to interpret the relationship between interlocking directorates and the collusion strategy may explain why this assumption has been abandoned in recent years. The second hypothesis is known as resource dependence and suggests that interlocking directorates help companies in an uncertain environment capture the funds, information and markets required to guarantee their survival at the lowest cost possible (Pffefer, 1972 and 1987; Aldrich and Pfeffer, 1976; Pfeffer and Salancik, 1978; Galaskiewicz et al, 1985; Boyd, 1990; Mizruchi and Stearns, 1994; Carpenter and Westphal, 2001). This interpretation assumes that the interlocking director monitors the companies associated with him (Mizruchi, 1982; Caswell, 1984). But the cooptation and monitoring argument, in practice, raises a problem: it is not always easy to identify the direction of the interlocks and know the main company represented by the director. The cooptation and monitoring function has received increasing scrutiny in the financial sector, as it is thought that a company with a bank director has better access to capital, transmits a more reliable image to the market and shows a more efficient economic performance – although this performance usually comes along with a loss of independence in the decision-making process of the company (Mariolis, 1975; Mintz and Schwartz, 1985; Van Overfelt et al. 2009). A third hypothesis, from a business approach, suggests that IDs emerge for reputation reasons: a company with prestigious members – renowned by their actions in other companies – in its board will enjoy the favor of its investors. For the same reason, a company is interested in maintaining formal relations, by having interlocking directors, with other companies that are highly valued in the market (Selznick, 1957; Dimaggio and Powel, 1983). It is also frequent that companies appreciate the presence of influential people in the political spheres. The individual perspective, from the directors’ point of view, suggests that IDs depend on their own will as they are aiming to earn merit in their professional careers (Zajac, 1988; Stockman, Van der Knopp and Wasseur, 1988). Therefore, those interested in obtaining several seats in corporate boards would be individuals rather than organizations. However, this argument only shows the reasons why a director would aspire to hold his position in several companies and does not take into account the company arguments. It seems more appropriate, therefore, to consider it as a complement to the organizational approach. The class perspective emerges from Sociology. The practice of having interlocking directors is seen as an instrument to promote social cohesion in the 3 A comprehensive review of the literature interlocking directorates can be seen in the classic article of Mizruchi (1996). 3 dominant economic group (Mills, 1956; Levine, 1972; Zeitlin, 1974; Mintz and Schwartz, 1981; Davis, Yoo and Bakeer, 2003; Burris, 2005). From a Marxist approach, IDs enable the social and economic elite to exert pressure on the government action (Miliband, 1969; Domhoff, 1970). Several comprehensive approaches have also been considered, combining the organizational and class perspectives. Thus, linkages between companies would emerge as a response to the needs of the companies but also they could be used to coordinate political initiatives in defense of both the class interests of individuals and the economic interests of companies (Useem, 1984; Mizruchi, 1992). Over the past few years, the theory of the interlocking directorate as the backbone of the ruling class has been revitalized supported by the theory of the economic entrenchment, where IDs are considered one of the instruments used by the business elite – associated with the political power – to defend their interests to the detriment of the rest of the country’s economy, by restricting competition – in this regards, it is reminiscent of the collusive theory – and favoring corrupt practices (Rajan and Zingales, 2003; Morck, Wolfenzon and Yeung 2005; Haber and Perotti, 2008). The two main approaches (organizational and class) have given rise to numerous studies that, thanks to the development of the network theory in the 1970s, have examined the corporate structure of a country based on interlocking directorates (Allen, 1974; Stockman, Ziegler and Scott, 1985; Yeo, Pochett and Alcouffe, 2003; Rommens, Cuyvers and Deloof, 2007; Fennema and Heemskerk, 2009; Heemskerk, 2007). These structures have also been frequently analyzed in cross-country comparative studies (Stockman and Wasseur, 1985; Windolf and Beyer, 1996; Mac Canna, Brennan and O’higgins, 1998; Windolf, 2002 and 2009; Rodríguez, Cárdenas and Oltra, 2004; Maclean, Harvery and Press, 2006; Santaella et al., 2008; Heemskerk and Schnyder, 2008). The use of IDs seems to have been less prolific in the field of Economic History. Analyses have been focused on identifying either the relationships in the circle of power (within which we would find the entrepreneurial elite) or the corporate structure of the country and the role played by the banking industry in the industrialization process. As for the time frame, most studies have been focused on the period prior to the World War II (Karjala, 1979; Lundström and Ottoson, 1989; Ottoson, 1992; Vasta and Baccini, 1997; Ghita, Cuyvers and Deloof, 2009; Mussacchio and Read, 2007; Windolf, 2009) and rarely on the later period (Rinaldi and Vasta, 2005 and 2008). Others, however, have used longer periods with a long-term approach (Bunting and Barbour, 1971; Mizruchi, 1982; Hopner and Krempel, 2003; David et al. 2009; Schnyder et al., 2005; Ghita, Cuyvers and Deloof, 2010). In this context, this paper aims at examining the adequacy of the most important theories on interlocking directorates with respect to the relationships between the largest Spanish corporations in the early 1970s by using the particular methodology of the network analysis. This contribution, therefore, has a threefold objective: from the methodological standpoint, revitalizing the classic studies of interlocking directorates with the most recent techniques of Social Network Analysis, an interesting approach as it brings forward a dynamic view of the issue that takes into account the long term; from the theoretical point of view, evaluating the several hypotheses about the nature and functions of IDs; lastly, from an empirical standpoint, developing the current understanding of the Spanish entrepreneurial elite based on the analysis of their business networks and groups. 4 Once the literature has been reviewed in this introduction, the text will be developed in four more sections: the second section will describe the data and methodology used; in the third, the structure of the corporate relationships will be determined for each of the time periods selected; in the fourth section, the collusive and the cooptation and monitoring hypotheses will be analyzed from the perspective of the organizations, with a special focus on the financial and electric sectors. The fifth section will investigate the validity of hypothesis on the circle of power and the economic entrenchment. The text will end with a few short and general conclusions. 2. A METHODOLOGICAL REVISION This paper has been elaborated on the basis of the corporate boards of the largest companies operating in Spain in four selected dates: 1917, 1930, 1948 and 1970. The lists including the largest companies are those drafted by Carreras and Tafunell (1993) in their popular paper on Chandlerian model. These authors have contributed with the lists of the years 1917, 1930 and 1948. We have decided to replace the 1974 period by 1970, which has been built following the same methodology based on the net assets4. This approach, which has been chosen so as not to oversize the banking industry and to give greater emphasis to manufacturing companies, excludes those companies from industries with less assets than industrial companies, such as insurance companies. In order to include the latter, which have been shown by other studies of interlocking directorates as a sector of some significance in the structure of corporate power (Rinaldi and Vasta, 2008), the ten largest insurers of each year were incorporated on the basis of the paid-up capital. Therefore, the sample comprised 210 companies – the 200 largest plus the top 10 insurers – for each of the four years selected. It should be noted that the fact we resorted to the largest companies does not imply that we accept that there is a strong correlation between large companies and economic growth neither that we deny the relevance of the small or medium size enterprises, least of all in an economy such as Spain’s where these enterprises are still so important. However, if we want to conduct a study of the business elite – the peak of the corporate structure – we must focus on the largest companies. And, despite the shortcomings that may be detected in the criterion used by Carreras and Tafunell5, it is a good starting point as, regardless of whether they are the actual 200 largest companies in the country, it clearly reflects 200 of the largest for each time period. The boards of directors in these companies have been obtained from the same source used by Carreras and Tafunell, the Anuarios Financieros de Bilbao6 (Financial Yearbooks of Bilbao). This is a very well-known type of publication in the Spanish economic historiography that was used as a basis for the classic studies of interlocking directorates mentioned above. The yearbooks contain, along with other information 4 A criticism for choosing net assets to determine the list of the largest companies can be found in Aubanell (1994). 5 The assumption that the largest companies are corporations; the double accounting in the case of companies associated with business groups, etc. (Aubanell, 1994). 6 When, because of several reasons, the board of any company was not found, other yearbooks were used, such as the Anuario Financiero y de Sociedades Anónimas de España (Financial Yearbook of Corporations in Spain), which was edited by the Revista Financiera, the Anuario de Sociedades Anónimas (Yearbook of Corporations) by García Ceballos, and the Anuario Técnico e Industrial de España (Spain Technical and Industrial Yearbook) by Gálvez-Cañero and Gorostizaga. 5 about corporations, data related to their financial situation, activity and registered office7. A database has been built registering the names of the presidents, vicepresidents and directors, as well as those of the managing directors and CEOs, for each company and year when they appear. After obtaining the boards of directors, the ID-based connections between companies and sectors of activity were represented by two series of matrices. Furthermore, a third series of matrices links directors to each other on the basis of their presence in the same company. Subsequently, the methodology and tools of social network analysis were applied to these matrices8 with the help of the software UCINET9, to obtain the structure of relationships and the appropriate statistical measures to establish a hierarchy for the role played in this structure by the different stakeholders10. 3. THE CORPORATE NETWORK OF THE LARGEST SPANISH COMPANIES According to the approach set out above, the Spanish corporate network can be studied on the basis of the relationships established between companies and the members of the boards. TABLE 1 BOARDS OF DIRECTORS IN SPAIN (1917-1970) Years 1917 1930 1948 1970 Interlocking directors 273 353 405 451 % of the total number of directors 20.7 23.6 26.5 20.2 Average size of the Boards 9.4 12.0 12.4 14.5 Interlocking directors per company (average) 5.0 7.2 7.2 6.5 81.8 88.6 92.9 90.0 8.9 21.3 13.9 7.21 Companies with interlocking directors (%) Density x100 Source: prepared by the authors, see text. Between 1917 and 1970, as it is shown in Table 1, the number of interlocking directors was increasing, although the trend was different for its representation in relation to the total number of directors, with the middle years showing the highest values. 7 For the source see Tafunell (2005). For the network analysis in the study of organizations, see Borgatti and Foster (2003). 9 Borgatti, Everett and Freeman (2002): Ucinet for Windows: Software for Social Networks. 10 Up to now, the only studies carried out with the social network analysis in the field of Spanish economic history were produced by Badía et al. (2010) (to analyze the role played by the networks of social relationships in the development of the investment in Catalonia during the middle of the 19th century), Garrués, Rubio and Hernández (2011) (aiming at identifying the investors in Andalusian companies during the first half of the 20th century) and Garrués and Rubio (2011) (who analyzed the Andalusia’s degree of economic integration based on business relationships). 8 6 The size of the boards grew from 9 to 14 seats on average, a very similar figure to the current one11. Likewise, the number of interlocking directors per company was represented by an inverted U-shaped pattern with the minimum values on the edges and the maximum values in 1930 and 1948. Most of the largest companies had interlocking directors, which shows that IDs were a generalized phenomenon among the Spanish business elite. The last row of the Table 1 contains a network measure, the density, which is calculated by dividing the number of relationships established between the companies by the total number of potential relationships. The higher density levels reveal the strongest linkages between the groups of companies making up the network. The highest density was reached in 1930. Afterwards, it dropped significantly following a similar evolution to that confirmed by Rinaldi and Vasta (2005) for the Italian case and that can be explained both by the liberalization of the economy and the entry of foreign companies – especially from the motor and chemical industries – that did not engage with the others, as well as the strong presence of estate-owned enterprises, which are less closely connected with the privately owned ones. 3.1. SECTORAL DISTRIBUTION The sectoral analysis of the relationships between companies identifies the most relevant sectors in the structure of the Spanish corporate elite12. We cannot forget that the results are affected by the list of companies itself, as the several economic activities are not represented in an equitable way neither the size of the boards of directors are homogenous, with the financial companies generally having the largest boards. Table 2 shows the degree of centrality –number of relationships with other sectors– of the most significant branches of activity in the corporate network 13. Two sectors stood out for maintaining a high degree of centrality in each of the years analyzed: the financial and the electricity companies, with a high representation among the largest companies and a board size above the average, showed a very high level of connectivity with the rest of the productive activities14. A deeper analysis of these two sectors will be explained in later sections. The “transport and communications” sector, which comprises railway and shipping companies (air transport was incorporated in 1948, with the company Iberia, and highway operators were incorporated in 1970), achieved first position in 1917, and third in the next two time periods, before dropping significantly in 1970. The importance of this sector in the first two periods is connected to both the importance of the railway companies and the high cost of their initial establishment. The incorporation of the national company RENFE (1941) and the demise or integration of the remaining firms would explain the lower weight of this sector. 11 Between 2004 and 2008, the boards of the corporations listed in the IBEX-35 had an average size of 14,15 directors (Acero and Alcalde, 2010a). To learn more about the characteristics of the boards of directors in the current Spain, see Acero and Alcalde (2010b). 12 The ranking used, for consistency reasons, is the same ranking provided by Carreras and Tafunell (1993), but it has been incorporated to register the network measures more clearly. 13 The degree of centrality is set out as percentages. It should be noted that the sum of the indicator does not equal 100 due to its own nature. 14 The results are very similar to those already known for the Italian case (Vasta and Baccini, 1997; Rinaldi and Vasta, 2005 y 2008). 7 TABLE 2 DEGREE OF SECTORAL CENTRALITY (%). Centrality (%) 1917 1930 1948 1970 BANKS 19.0 14.9 25.8 25.0 ELECTRICAL INDUSTRY 17.8 19.8 28.3 15.8 TRANSPORT AND COMMUNICATIONS 22.4 15.2 15.6 3.1 18.0 6.5 12.6 5.4 TRANSPORT MATERIAL 4.1 3.5 11.7 4.3 CHEMICAL INDUSTRY 2.1 2.0 13.3 5.7 INSURANCES 4.3 3.1 7.7 3.8 AGRIFOOD AND TOBACCO INDUSTRIES 5.3 2.1 7.9 3.1 OIL AND COAL 0.0 2.2 4.7 6.0 OTHERS* 5.0 9.1 15.5 11.6 st MINING AND 1 METAL PROCESSING Source: prepared by the authors, see text. *It includes 13 sectors. “Mining and first metal processing” is the only activity that, along with the former, was always among the top five positions in all the time periods (considering the category “others” in a disaggregated manner). However, its weight was very different during those periods – very important by 1917 and decreased thereafter. The mining sector had less centrality in the networks than relevance in the Spanish economy and business structure, especially until 1930, despite being well represented in the list of the largest companies. One explanation for this is that, as many of these firms were foreign, their boards of directors did not usually include individuals who were also directors in other companies operating in Spain. It would be interesting in this respect to carry out a historical study of international nature in the same way as it has been done for the present days (Carroll and Sanpinski, 2002; Rodríguez, Cárdenas and Oltra, 2004), to cross check if these important firms linked to the mining sector were connected to European networks. The same applies to other sectors, but to a lesser extent15. In addition to the banking, electricity, transport and mining sectors, which were well positioned throughout the analyzed period, other sectors that occasionally had an outstanding performance were the chemical industry, in 1948 (with companies of significant centrality such as Sefanitro, Sociedad Española de Carburos Metálicos or Nitratos de Castilla) and the oil, in 1970 (with Campsa, Petronor and Cepsa). Regarding the degree of sectoral centrality, it can be added that 1948 was by far the year with the most centrality for all the sectors, which, along with other measures, may be a sign of a greater inter-sectoral connection. On the contrary, the two leading sectors – banking and electricity – were far apart from the rest in 1970. The linkages between the companies and, therefore, between the sectors, are the IDs. These linkages connect a company to another of the same sector or activity. The openness coefficient of any sector is obtained by dividing the inter-sectoral linkages –a sector with the rest of sectors– by the total number of linkages in a sector –inter-sectoral plus intra-sectoral. Table 3 shows the openness coefficient of the five sectors with the highest centrality for each period. Values range from 0 (no linkage with other sectors) to 100 (all the linkages are connected to other sectors). Except the electrical industry, the 15 This would be the case of the railway and electricity companies, in the first periods, or the motor sector, in the last period. 8 sectors displayed in the Table 3 showed figures between 81 and 96 percent, i.e. very important connections with other sectors. Despite having a high degree of openness, electricity companies showed, especially in 1917, a higher propensity to establish relationships with other electricity companies via IDs. TABLE 3 OPENNESS COEFFICIENT OF THE SECTORS WITH THE HIGHEST CENTRALITY 1917 ELECTRICAL INDUSTRY BANKS MINING TRANSPORT AGRIFOOD (1) 355 241 321 391 102 (2) 396 371 375 457 111 (½x100) 89.6 65 ELECTRICAL INDUSTRY 85.6 85.6 91.9 TRANSPORT MATERIAL 1930 BANKS MINING TRANSPORT (1) 1,005 1,132 463 1,011 262 (2) 1,136 1,514 497 1,159 265 (½x100) 88.5 74.8 ELECTRICAL INDUSTRY 93.2 87.2 1948 BANKS MINING TRANSPORT 98.9 CHEMICAL INDUSTRY (1) 724 690 364 438 373 (2) 777 851 380 468 400 (½x100) 93.2 81.1 ELECTRICAL INDUSTRY 95.8 93.6 1970 BANKS MINING 93.3 CHEMICAL INDUSTRY OIL (1) 533 324 132 138 138 (2) 656 413 141 156 149 (½x100) 81.3 78.5 93.6 88.5 92.6 Source: prepared by the authors, see text. (1) Inter-sectoral linkages. (2) Total linkages. 3.2. BUSINESS GROUPS Companies are behind sectors. The study of interlocking directorates combined with the network analysis provides a few valuable indicators (Table 4). TABLE 4 MEASURES OF COMPANIES WITH INTERLOCKING DIRECTORATES YEAR A B C D 1917 81.8 9 145 58.0 1930 88.6 1 178 71.9 1948 92.9 2 181 72.8 1970 90.7 3 182 54.3 Source: prepared by the authors A: companies with IDs against the total listed (%) B: Groups of companies related (components) C: Number of companies in the most important group D: Companies with banking IDs against the total number of companies with ID (%) 9 The largest companies in Spain –200 plus 10 insurance companies– were closely connected to each other through interlocking directors (A). Between 1930 and 1970, the percentage of interlocked companies was about 90 percent and only in 1917 the percentage was lower (nearly 82 percent). The rows B and C contain the groups of companies16 connected to each other by directors (B) and the number of companies containing the largest component for each period (C). In the last three years the pattern is very similar: few components –between 1 and 3– and a high concentration of companies in the largest one – about 180. Once again the year 1917 stands out, with 9 components and 145 companies in the main component. What do the differences between the first and later periods show? They may suggest that the Spanish capitalism was established in its modern form after the First World War. In the main component of 1917 many foreign companies were included, such as Sociedad Minera y Metalúrgica de Peñarroya (SMMP), Société Française des Pyrites de Huelva, Mines de Cuivre de San Platon or Compagnie d’Aguilas, to name but a few. The smallest components consisted of two or three companies, usually from the same sector. There were foreign components, such as the one formed by Huelva Copper & Sulphur Mines and Rio Tinto Company, or Alquife Mines & Railway and Tharsis Sulphur & Copper, but also Spanish, which were linked to family groups or specific geographic areas, such as the one formed by Azucarera Larios and Industria Malagueña. There are no signs of a different behavior pattern among “Spanish” and “foreign” companies, as both are found in the main group and in small components without any distinction. But the difference between the British and the other European companies does seem significant. The latter, especially the French and the Belgian, used to be in the main component, whereas the British companies were more disconnected, either forming small groups or being left out of the networks. As mentioned above, in the years 1930, 1948 and 1970 both the number of interlocking companies and the size of the largest component increased at the same time, as the number of foreign companies and directors decreased, especially after the Spanish Civil War (1936-1939). Aside from the main component, the smallest components were just pairs of companies –one in 1948 and two in 1970. And attention should be drawn to 1930, as during that year all the companies with interlocking directors were linked. In any case, during the four years under study there was a very dense network of relationships among the largest companies. Row D (Table 4) shows companies with linkages to financial firms based on interlocking directors in relation to the total number of companies with IDs. This question will be addressed later in this paper although it should already be noted the presence of high ratios, always above 50 percent, and especially in 1930 and 1948. From a structural point of view with respect to the network, the fact that two companies share an interlocking director means that both are part of the same 16 In the language of networks the groups of stakeholders connected to each other are called components. 10 component, but this relationship does not imply that both companies belong to the same business group17. The presence of at least five interlocking directors between two companies has been considered as a criterion to identify business groups18. This is an imperfect yet workable criterion despite it is not necessary that the resulting groups have to be the same as those resulting from an analysis of the ownership structure of the companies. Table 5 shows the main groups of companies interlocked by at least five interlocking directors between 1917 and 1970. Each group has been identified with the name of the dominant company, and the number of interlocked companies as well as the company that showed the highest centrality has also been included. TABLE 5 BUSINESS GROUPS AND COMPANIES WITH THE HIGHEST CENTRALITY IN EACH GROUP YEAR 1917 1930 GROUP COMPANIES HIGHEST CENTRALITY BANCO DE VIZCAYA 8 Eléctrica de Lima BANCO HIPOTECARIO 3 Caminos de Hierro del Sur de España BANCO VITALICIO 3 Banco Vitalicio BANCO DE CREDITO INDUSTRIAL CAMINOS DE HIERRO DEL NORTE DE ESPAÑA 12 Unión Eléctrica Madrileña BANCO DE VIZCAYA 10 Electra del Viesgo 11 Banco de Bilbao ENERGIA ELECTRICA DE CATALUÑA 5 Unión Eléctrica de Cataluña MENGEMOR 3 Mengemor BANCO DE VIZCAYA BANCO CENTRAL 1948 BANCO VITALICIO 17 Banco de Bilbao 5 Banco Central 3 General de Tabacos de Filipinas BANCO URQUIJO 3 Industria y Navegación CATALANA DE GAS Y ELECTRICIDAD 3 Catalana de Gas y Electricidad BANCO DE VIZCAYA 9 Banco de Vizcaya BANCO CENTRAL 3 Banco Central 1970 BANCO DE BILBAO 3 Banco de Bilbao FINANZAUTO 3 Finanzauto BANCO DE SANTANDER 3 Banco de Santander Source: prepared by the authors, see text 17 The definition of business group is complex. For Puig and Torres (2011: 1), business groups are “stable and flexible forms of organization constituted by a relatively high number of companies that are autonomous by law but linked to each other by formal and informal ties and operate according to a homogenous strategy in a wide range of sectors, which are not always related.” The business group concept was recently reviewed by Colpan, Hikino and Lincoln (2010). For the Spanish case see Álvaro (2011). 18 The average size of the corporate boards in the period varied between 9.4 (1917) and 14.5 (1970). 11 1917 was again the year with the lowest connection, both in terms of the number of groups (three against five in the later years) and in terms of the number of companies in the largest group (8). As for 1930, we can highlight the size of the groups, with three of them being formed by more than 10 companies. Each group had a different feature: in the Banco de Vizcaya’s group, almost all the companies were linked to the rest. The group of the firm Caminos de Hierro del Norte de España had a different grid structure, where this company acted as a bridge between two subgroups, one formed by railway companies and the other around the Banco de Bilbao, whose higher centrality was based on the presence of its subsidiary, Banco de Comercio. In this respect, the Banco de Crédito Industrial’s group features a more singular structure, as it was not strictly a group since it hardly had linkages between more than two companies and where it was also necessary to go down to the level of four interlocking directors to evaluate the different groups comprising this structure. The largest group was established in 1948, when the groups of the two big Biscayan banks were linked via Iberduero, a company that shared six interlocking directors with Banco de Vizcaya and seven with Banco de Bilbao. In 1970 only a group stood out from the rest, following a more similar pattern to 1917 than to the previous years. As in 1917, that group was the one articulated by Banco de Vizcaya. While in 1917 all the companies apart from the bank itself and the shipping firm, Marítima del Nervión, were power suppliers,19, in 1970 the group was characterized by its greater diversification while maintaining its traditional link to the electricity sector. In eight of the eighteen groups the company that had the highest degree of centrality was a bank, and six an electricity company20. It is not surprising, as they are the dominant sectors in the groups. Also significant, until 1948, was the railway sector. The poor development of the Spanish stock market, at least until the 1960s, along with the strong capital requirements by the largest industrial companies, explains why banks, acting as financial intermediaries, were a key element in the economic growth of the country. Their involvement in the development of the railway and electricity, sectors with high sunk costs, was therefore essential, as in other European economies. The banks normally occupied key positions in the articulation of the groups. Also, the financial sector enjoyed a high centrality. If we look at row D of Table 4, the number of companies linked to banks through interlocking directors, out of the total of the companies that had IDs, always remained over 50 percent. In 1917 it almost reached 60 percent but it is in the years 1930 and 1948 that we find the greatest linkage, when 72 percent of the companies that had interlocking directors related through them to banks. The later reduction can be explained by the application of the Law on incompatibilities of senior staff in private banking (Law 31/68), which limited the number of positions on boards of directors. Or, more probably, by the development of the company structure and the mechanisms of coordination and control on which the companies relied. A discussion of the role of banks refers us back to the debate generated by Gerschenkron (1962) on the different models for achieving industrialization. In contrast 19 The Banco de Vizcaya was known as the “electricity bank”. If we consider the two companies with the highest centrality in each group, over 40 percent of them are financial companies as nearly 30 percent are electricity companies. 20 12 to the classical English model, characterized by self-financing, big family companies and a lesser participation of the banks, the Spanish case resembles more the continental or German model, with a significant role for the financial sector, which provides the capital necessary to the development of industry. Close relations between the boards of directors of the banks and the Spanish industrial companies have been demonstrated by numerous authors at different times of the 20th century (Velarde, 1967; Tamames, 1961 and 1977; Muñoz, 1970; Roldán, García Delgado and Muñoz, 1973; or Tortella and Palafox, 198421). Applying network analysis methodology, Aguilera (1998) and Rodríguez (2000 and 2003) have demonstrated that this situation continued in the 1990s and in the first years of the 21st century. 4. ORGANIZATIONAL APPROACH: COLLUSION AND COOPTATION In the introduction we mentioned the theories which explain the nature and functions of IDs. From the viewpoint of organizations, there are three main arguments, considering interlocking directors as a means of reaching collusive agreements to limit competition in a sector; acquisition and control of the resources necessary for the survival of the companies; and reasons of prestige and legitimacy in relation to the market and to investors. The last question is difficult to approach and, in any case, it can complement the previous ones. Therefore, the hypotheses that will be dealt with in this appendix are the first two: collusion, on the one hand, and acquisition of resources and control, on the other, in the two most outstanding sectors of the Spanish corporate structure, banking and electricity. 4.1. COLLUSION The theory of collusion (Pennings, 1980; Burt, 1983), which maintains that interlocking directors are an instrument that makes it possible for companies to reach agreements to restrict competition in their markets, has lost vigor in recent years, because although collusive agreements have occurred it would not be easy to explain them by the presence of interlocking directors. Nevertheless, in countries like the United States legislation was developed with the aim of prohibiting the existence of interlocking directors between companies that were active in the same sector22. In the Spanish case, there have been many authors who have defended the theory of collusion in the main sectors and especially in banking (Tamames, 1961 and 1977, Roldán and García Delgado, 1973). More recent investigations on the banking sector have indicated that under Francoism the limitation of competition was neither perfect nor permanent, with collusive agreements frequently being unfulfilled (Pons, 1999 and 2001; García Ruiz, 2002; Pueyo, 2003). Pueyo (2006a and 2006b) has studied the boards of directors of the financial companies over eight periods, between 1915 and 1985, finding that, if there were certainly times when the big banks maintained close links with each other through IDs – 21 The works of the 1960s and 1970s tend towards the line of Hilferding (1985) [1910], identifying the Spanish situation with the phase that this author characterizes as “financial capitalism”. 22 Clayton Law (1914). See note 1. 13 as in 1921-1925 and 1965-1967– they did not constitute permanent and lasting networks that would allow us to speak of a prolonged collusive strategy throughout the period. Without wishing to repeat the work of Pueyo, the financial companies of the four periods studied have been isolated and analyzed independently, apart from the other big companies. In the years 1917 and 1970 a single network that related to all the banks was not formed. However, in 1930 and 1948 this did happen. The network was especially complex in 1930: there were 26 banks connected through ID, and 18 of them were united in a single component by at least two interlocking directors. This component only dissolves when at least three interlocking directors are sought, the financial system being broken down into six groups. The network of 1950 is simpler: a component of 17 financial companies united by at least one interlocking director, which can be reduced to a group of 9 banks if we seek a link of more than two interlocking directors. It is, therefore, difficult to prove a collusive strategy in the banking sector by considering IDs alone. Together with the directors who owed their seats to being representatives of a financial body, it is probable that there is a coincidence of persons representing their own economic interests or those of their acquaintances, given their condition as capitalists. But the fact that interlocking directorates do not demonstrate the existence of agreements to restrict competition in the financial sector does not mean that such agreements did not occur, since other more efficient mechanisms of control and coordination could have been employed. If this were true, the loss of complexity of the network of interlocking directors in 1948, with respect to 1930, could be explained by the creation of the Consejo Superior Bancario (Spanish Banking Board) in 1946 (Tamames, 1961: 28-33) which would exercise the functions attributed to the IDs. And in the electrical sector? Was there collusion? For the Spanish electrical sector, where some excellent monographs exist, there are not yet enough studies which approach its development from the organizational point of view. A first approximation to this question, employing network analysis methodology, does shed some light on it. In 1917 there was only one electrical group which was strongly cohesive through interlocking directorates, that of Hidroeléctrica Ibérica which, with Basque origins, tried to occupy other markets promoting the creation of large electrical companies and developing a strategy of cross-share holdings, as did other international holdings (Hausman, Hertner and Wilkins, 2008), to establish barriers to entry and obtain local or regional monopolies. After the First World War, difficulties in the supply of coal and the increase in its price implied significant changes in the sector, which were reflected in hydroelectric development and the extension of high voltage. In 1930 the number of power plants among the major companies of the country doubled, while the connections between them through interlocking directors grew. A total of 36 companies were linked by at least one interlocking director. And, contrary to what happened in the financial sector, the links were very significant. In order to find differentiated components it is necessary to look for a minimum of three interlocking directors, and in this way two components can be appreciated. On the one hand, in the Catalan market, with a high degree of connections, a group was established around Barcelona Traction. In the rest of the country, it appears that a balance of forces was established between the two main 14 companies of Grupo Ibérica, Ibérica and Hidrola which, as indicated by Aubanell (2000), became a company independent of Ibérica in 1925. In 1948, the electrical network was formed by around thirty companies, among which, if we descend to a level of more than two interlocking directors, three groups stand out, of unequal size and significance, headed by Iberduero-Hidrola, Catalana de Gas y Electricidad and Barcelona Traction. The connections between the rest of the companies were weak, except in the case of the public companies Endesa and Enher. In 1970 the number of interconnections was reduced still more, as a consequence of the process of concentration of the sector. Fourteen electrical companies disappeared from the list of the major companies, in some cases by mergers or absorptions. The legislation on compatibilities, as well as the greater stability of the sectoral status quo, meant that the number of shared seats on the boards of directors were clearly lower in the big companies. In the absence of a study with another type of source, it appears that in the electrical sector the hypothesis of collusion through IDs is more plausible than in the case of banking. The close relations established through cross-share holdings and interlocking directorates leads to strategies to allocate markets and areas of influence. The said strategies, like the functions of the directorates, would change over time, and would rely on other instruments to coordinate collective actions, like the creation in 1944 of the electrical cartel, Unidad Eléctrica (UNESA), by the eighteen biggest electrical firms of the country. 4.2. COOPTATION AND MONITORING The hypothesis of resource dependence – the interlocking directorates guarantee to the company the resources, information and financing necessary for its good performance – cannot be tested easily studying a sector in isolated form. The structure of the company groups obtained in through network analysis (see section III. II) shows that, in the majority of cases, one or several financial bodies enjoyed greater centrality and would in turn articulate the other companies around them. Interlocking directorates would allow the banks to monitor the performance of the companies in which they had holdings, with which they usually had commercial relations, as well as obtaining trustworthy information on the markets in which they were active. At the same time, the companies linked to the banks would ensure privileged access to capital and obtain a stable partner of reference (Mariolis, 1975; Windolf, 2009). Although there is also a counterpart to this, since it increases the level of risk for the banks, and the companies can be forced to accept certain strategies imposed by the banks (Pons, 2001; Valdaliso, 2004). In order to examine more closely the relationship between interlocking directorates and acquisition of financial resources-control, the IDs of the electrical sector have been studied, distinguishing between financial, electrical, and other directorates. From an examination of Table 6, on the connectivity of the electrical sector, we can extract several observations. First, the number of companies that would form the network of interconnections of the electricity business (inter and intra-sectoral) practically doubled in the first third of the 20th century, becoming stabilized after that. Second, the number of interconnections per director, according to the evolution of the sector (strong expansion-gradual concentration), reaching its highest value in 1930 15 (3.2), clearly surpassing the level of 1917 (2.5), and undergoing a strong reduction from the dawn of Francoism (1.9 and 1.7). Third, the weight of the so-called financial directors, with respect to the electrical companies, was clear at all stages, in accordance with the strong banking dependency of a sector whose development demanded high sunk costs23. TABLE 6. INTERLOCKS (ID) OF THE ELECTRICAL SECTOR, ACCORDING TO THE TYPOLOGY OF DIRECTORATES. Interconnections/Company 1917 1930 1948 1970 1917 1930 1948 1970 A1 A2 A3 A4 B1:A1 B2:A2 B3:A3 B4:A4 Number of companies (electrical and non electrical) 54 93 98 92 2.7 4.9 3.1 2.6 Interlocks/Director Interlocks ID D. ID D. ID D. ID D. 1917 1930 1948 1970 B1 C1 B2 C2 B3 C3 B4 C4 B1:C1 B2:C2 B3:C3 B4:C4 147 60 460 142 300 158 242 141 2.5 3.2 1.9 1.7 Financial D. 73 23 279 58 177 87 138 73 3.2 4.8 2.0 1.9 Electrical D. 44 16 137 50 60 29 50 28 2.8 2.7 2.1 1.8 Others D. 30 21 34 63 42 54 40 1.4 1.3 1.5 1.4 44 Source: prepared by the authors, see text. Note: D.: Directors. Financial Directors: directors who are seated on the Board of a financial body. Electrical Directors: directors who are seated on two electrical companies but not on any financial company. Others Directors: directors who are seated only on the Board of an electrical company, on no financial company and on one or more other branch of activity. The situational analysis, however, is richer in shades. In 1917, new directors of the Banco de Vizcaya occupied 35 common seats in the six electrical companies of the Ibérica group. Less known is the linkage to the sector of the Banco Hipotecario which, nevertheless, was the second biggest bank involved in the electrical business. Other banks, like Banesto, Bilbao or Hispanoamericano were involved – between 4 and 6 seats– in the directorates of eight electrical companies. Although the relations of interconnection of interlocking directorates could merely reflect the sum of individual or corporate strategies, there exist clear suspicions –that other work would have to corroborate – that a good part of the financial bodies involved in the electricity business would act in a syndicated manner. This suspicion, in addition to what has already been indicated, stems also from the evidence that Hipotecario, Banesto and Hispanoamericano collaborated with the majority partner, Vizcaya, in three significant electrical companies (Hidrola, Lima and CEM) with the same number of directors. A schema repeated by the two biggest financial entities with the Basque bank in Viesgo. It also does not seem accidental that three banks, Comercial, Español and Hipotecario, would have a presence in the directorates of Santillana and Mengemor or that the holding of Vizcaya and Bilbao, its future rival, was very similar in Ibérica and Hidrola. 23 The strong penetration of the financial sector in electricity has been demonstrated by numerous authors, such as Errándoena (1935), Muñoz Linares (1955), Tamames (1961), Roldán, García Delgado and Muñoz (1973), Maluquer (1985) and Antolín (1999). 16 The ad hoc coalition of Vizcaya with Hipotecario in the firms cited, and Unión Eléctrica Vizcaína, would serve to strengthen its control over Ibérica. In 1930 the electrical sector reached a high degree of financial integration, above its productive integration. The greater demand for capital meant that the financial bodies found this industry to be a good client. The need to control the risk inherent to loans, the management of capital increases and the design of dividends policy obliged the financial bodies to be present on the boards of directors of the electricity companies. Network analysis allows us to make three observations for this year: first the expansion of the electrical sector after the First World War increased still more the participation of the financial bodies; second, if in 1917 the banks Vizcaya and Hipotecario stand out, in 1930 two organizations characterized by a strong industrial vocation were added to them, Banco Urquijo and Crédito Industrial24; third, the latter, being a consortium in which nearly every Spanish bank was represented, acted as interconnector of the main electrical banks, Urquijo and Vizcaya. The linkage between electrical companies and banks, already made in 1917, was consolidated thirteen years later. The major difference between the two periods lay in the emergence of Saltos del Duero, linked to Banco de Bilbao, and CHADE, which united a group of banking bodies that collaborated with the international holding SOFINA in the Spanishification of the Argentine company CATE, so as to safeguard the German assets from the compensation paid to the Allies after the First World War. In 1948 changes were noticeable with respect to the previous period. The emergence of Iberduero (1944) as a result of the merger of Ibérica and Saltos del Duero meant that the two main Vizcayan banks, Bilbao and Vizcaya, shared interests. Banesto entered into some of the traditional electricity businesses of Vizcaya and reduced significantly the links of banks like Urquijo or Hipotecario, while increasing those of others, like Santander or Central. But in general there was a loss of vigor in relations through interlocking directorates between banks and electrical companies, which can be explained by a major diversification of the sources of financing of the latter, who gained in authority with respect to the banks. In 1970 the connectivity between electrical companies and banks continued to fall. The explanation is found in the already mentioned law of incompatibilities of 1968 and, above all, in the development of corporate relations, parallel to the sophistication and improvement of company systems of control and management that surpassed the advantages of personal interconnections (North, 2005). In spite of being very numerous the financial bodies with holdings in the electrical sector, Vizcaya, Hispanoamericano, Urquijo and Banesto stand out as reference banks of distinct groups. The hypothesis of resource dependence and financial control through interlocking directorates seems verified. Table 6 highlights the fact that, throughout the period studied, the electricity sector received a significant number of directors originating from the banking sector, who fulfilled the functions that these theories assign to them. However, knowledge of the strategies of acquisition and control should be completed with the use of other sources and the individual study of banks or groups of companies. 24 On the Banco de Crédito Industrial, Tortella and Jiménez (1986). 17 5. CLASS PERSPECTIVE: INNER CIRCLE AND ENTRENCHMENT The ID technique does not serve simply for the detection of relations between companies and sectors; it also allows us to study the links between directors. Personal relations have been a significant element in Spanish company activity, at least until well into the 20th century. Company groups with a family character have not been rare, as with the Urquijo group (Puig and Torres, 2008 and 2011), the Aznar group (Torres, 1993; Valdaliso, 2002 and 2006) or the Fierro group (San Román, 2009). Recourse to family financing has been frequent among entrepreneurs (Díaz Morlán, 2011). And marriage has been employed habitually as an instrument of renewal of the directorial capacities of company dynasties (Díaz Morlán, 2009). On the other hand, personal relations do not only include the family, but also friends and acquaintances. And we should add those of a political nature25, which can be materialized in distinct benefits for companies. Álvaro (2007) has shown how company networks, with financial and political linkages, were employed by ITT to obtain and maintain its telephone monopoly. And Torres (2003) has shown how companies employed distinct strategies to survive in the harsh conditions of the Francoist turn to autarchy (1936-1959), among them recourse to relations with influential persons within the regime. In the introduction we saw that, from the class perspective, ID have been interpreted as instruments which favor cohesion between the social and economic elites (Mills, 1956; Burris, 2005); even serving, according to the Marxist approach, to exert pressure on the actions of the state (Miliband, 1969; Domhoff, 1970). And also more explanations have maintained that ID originate from the strategies of companies, and that once created, they allow the coordination of policies to benefit the dominant companies and groups (Useem, 1984; Mizruchi, 1992). There would hardly be any differences between this approach and the theory of economic entrenchment: this latter supposes that a group of individuals, pertaining to the business élite, connected to the political regime and under its influence, exerting an oligarchic control over some concrete sectors or over the national economy as a whole (Morck, Wolfenzon and Yeung, 2005). The limitation of competition is obtained through the maintenance of high levels of corruption (Sheleyfer and Vishny, 1994) and, above all, through legislation which guarantees the defense of financial interests (Rajan and Zingales, 2003; Haber and Perotti, 2008). IDs, therefore, would be another of the instruments promoting unity between companies, banks and politics (Ghita, Cuyvers and Deloof, 2009). With this class perspective, very close to the theory of entrenchment and financial hegemony, a literature on interlocking directorates applied to the Spanish case developed from the mid 1950s to the late 1970s. It has already been mentioned that it identified a collusion strategy in the most important economic sectors, and that it came to the conclusion that the Spanish economy was controlled by the financial sector (De la Sierra, 1953; Tamames, 1961 and 1977; Muñoz, 1970; Roldán, García Delgado and Muñoz, 1973). Tamames (1977) placed more emphasis on the existence of a business 25 The period studied breaks down fundamentally into two historic periods marked by personalized political practices, such as the Restoration –caciquismo or “boss politics”– and Francoism. The latter has been defined by Sánchez Recio (2003) as “a network of interests”, to describe the relations between the dictatorship and the groups which supported it, in exchange for economic and political power. 18 elite with the ability to affect economic policy, through the constitution of institutionalized pressure groups. But in spite of being based on quantitative research and reflecting advanced ideas for the time in which they were produced, these works could not achieve the complexity which network analysis allowed in subsequent decades. Rodríguez (2000) has applied the new methodology and with an integrated approach, in the tradition of Mizruchi and Tamames, has identified the Spanish business circle for the year 1991, showing the links between the economic groups and the political ambit and indicating the key role of the banking groups, as well as the persistence in the central positions of the business system of the early 1990s of the old financial oligarchy of the 1970s. And subsequently (Rodríguez, 2008) has repeated the exercise for the year 2000, noting how the process of tertiarization of the Spanish economy and the opening of markets have produced significant changes, and the old financial elite has been replaced by a new class of more professionalized directors26. But until now social network analysis has not been applied in order to identify the business elite in the past. Does an inner circle exist within Spanish corporate power? Table 7 shows some measurements of interlocking directorate networks. The first column shows the total of directors (interlocking or not) of the major companies in each of the years studied. The second column shows the number of directors who, besides occupying at least two seats on the boards of directors of these companies, were related to other persons who also shared the same condition, giving rise to a network27. This network was made up of a reduced number of individuals, between 260 and 449 –between 20 and 26.5 percent of the directors of the biggest companies– that according to the analysis realized, would correspond to the Spanish corporate elite28. TABLE 7. MEASUREMENTS OF ID NETWORK. Years Directors 1917 1930 1948 1970 1,321 1,493 1,526 2,231 Interlocking % Degree of Degree of Index of directors * Interlocking centrality intermediation centralization directors * (%) (%) 260 353 405 449 19.68 23.64 26.54 20.22 0.4 0.3 0.2 0.2 0.61 0.39 0.35 0.40 9.5 8.0 4.5 4.6 Source: prepared by the authors, see text. * Only those that make up the network, see note 27. The Table 7 also contains measurements of networks: on this occasion the degree of centrality measures, in percentage terms, the coincidence of an interlocking 26 A similar approach, in search of the Spanish power circle, appears in Santos Castroviejo (2008). A different analysis appears in Baena del Alcázar (1998 and 2002): with the intention of testing Pareto’s theory of the circulation of the elite, relating parliamentarians, political appointments by decree and the directors of the biggest companies for the years 1972, 1980 and 1989, confirming that the Spanish elite only began to open up during the democratic period. 27 In the first year only, the interlocking directors that formed part of the network (main component) were not equivalent to 100 percent of total interlocking directors, but 98 percent, since six interlocking directors were not related to each other. 28 A more complete study of Spanish interlocking directorates can be found in Rubio and Garrués (2012). 19 director with another one in the same company. The degree of intermediation reflects the number of pairs of directors which can connect with a third, following an indicator of the capacity to control information that an actor has. And the index of centralization shows the level of dependence of the network with respect to its main actors. The data indicates 1917 as the year in which the group of interlocking directors was most reduced, but also that it was at this time that the directors enjoyed a greater average number of relations, and a greater capacity to connect with other individuals. Also in this period we find the maximum dependency of the network with respect to the main interlocking directors. It can be said that, according to the indicators commented on, the group of interlocking directors that has been called the business elite broadened in absolute terms between 1917 and 1970 and was in percentage terms more significant in 1930 and 1948. But the importance of the ID, in terms of ability to control information and possibilities to act as a coordinator of business strategies, was higher in the two first periods, before the Civil War. In 1970 the power circle appears, in terms of the proportion of interlocking directors out of total directors, like that of 1917, but there is considerable loss of relative weight of the network actors. This reduction in the importance of interlocking directors can be attributed to the 1968 law of incompatibilities, but it appears more probable that the explanation lies in the recourse to other, more complex, types of instruments of coordination on the part of companies. Qualitative analysis of interlocking directors, taking into account some concrete characteristics like linkage with political activity, the possession of a noble title or the continuity of the exercise over time is reflected in Table 8. TABLE 8. CHARACTERISTICS OF INTERLOCKING DIRECTORS. Years 1. POLITICIANS (TOTAL) 1.A. Active Politician 1.B. Politician before ID 1.C. Politician since ID 1.D. Before and after 2. NOBLE TITLE 3. ID BANK 4. REPEAT ID (% year 1) 5. REPEAT ID (% year 2) 1917 34.8 23.2 8.3 2.9 0.4 18.1 59.4 25.6 . 1930 29.7 6.7 18.2 3.6 1.1 18.2 47.1 21.0 19.9 1948 23.5 8.1 12.5 2.7 0.3 15.0 49.0 31.1 18.4 1970 20.6 10.0 10.2 0.4 0 10.9 83.4 . 28.2 Source: prepared by the authors, see text. The participation of directors in national politics allows an approach to statecompany relations and the possibility for companies of obtaining a legislative framework favorable to their interests29. To identify directors as politicians the status of Congress deputy has been taken into account30, and it has been indicated whether they 29 It should be borne in mind that the major part of the period studied took place under two dictatorships: that of Primo de Rivera (1923-1930) and that of Franco (1939-1975). 30 The Spanish Cortes is bicameral and is made up of the Congress (upper chamber) and the Senate (lower chamber). During the period studied the Senate alone functioned until 1923, and only some of the 20 combined political tasks and roles on boards of directors simultaneously (1.A.), previously (1.B.), or subsequently (1.C.). In 1917 nearly a quarter of interlocking directors were active politicians, a very high figure which could be explained by the characteristics of the parliamentary period of the monarchy of Alfonso XIII, which allowed space for well known business figures to participate in the political system while generating incentives – distribution of economic power– for themselves, but also by a lower level of professionalization of business activity. In subsequent periods the proportion of those politically active fell, only to increase again in 1970, because of the significant presence of public companies in the sample. According to Table 8, there were more cases of individuals who had a political career before becoming interlocking directors, than of interlocking directors who following business activity dedicated themselves to politics. This implies that it was important to have relations in the ambit of politics if one was member of the board of directors of a big Spanish company and explains the interest of these companies in guaranteeing direct relations to better defend their interests31. It should be indicated, in accordance with this interpretation, that in 1970 more than 10 percent of interlocking directors had occupied posts in the Francoist parliament. The relationship between the traditional upper class and the boards of directors of the main companies is an element present both in power circle theories and in those of entrenchment. However, it is difficult to approach empirically, as it requires knowledge of the specific circumstances of each interlocking director. An imperfect criterion used in other works (Ghita, Cuivers and Deloof, 2009) defines members of the upper class as those who have a noble title. In Table 7 we see the proportion of interlocking directors (2) in this situation: around 18 percent in 1917 and 1930 and a decline in the following periods, to reach the lowest figure in 1970. Is there a continuity of the corporate power circle? The evolution of the indicators shows that, independently of the time chosen, there was a group of interlocking directors which maintained themselves from one period to another32. The permanence of these individuals in the different years observed would be conditioned by the economic structure of the big company, not very flexible to change; by the specific nature of the task of director, which favors the long term; and by the reduced supply of individuals capable of exercising it, given the difficulties in acceding to the a necessary education. Considering this, it should be said that between 1917 and 1970, the Spanish corporate elite was made up of a fairly permanent group of individuals33, as argued by Tamames (1961 and 1977) and Rodríguez (2000)34. The presence over time of this elite supposes for Tamames a continual pressure over the decision making centers to advance its own interests, resulting in the economic and social domination of single class and the restriction of competition in the main sectors, limiting the senators were elected. Only six directors were elected senators and they were not parliamentarians, although they are included in the analysis as “politicians”. 31 It is not incompatible to have recourse to professional politicians who act as a lobby, as happens today and as happened in the period studied, for example with Lerroux and ITT (Álvaro, 2007). 32 The last two rows of the table show the percentage of individuals who repeated as an interlock in the following period, considering the first (4) and the second year of reference (5). The interpretation would be, for example, that 26 percent of interlocking directorates in 1917 repeated in 1930, representing 20 percent of the interlocking directorates of the latter year. 33 This permanence is increased if, instead of considering individuals, we take into account family histories, very much a factor among the directors, as indicate by Muñoz (1970). 34 Baena (1998 and 2002) indicates that the nucleus of the power elite is maintained over time, although opening up during the transition and the period of democratic governments. 21 modernization of the productive system and determining Spanish economic growth (Tamames, 1970: 145). Independently of whether this last interpretation is true, the interlocking directorates technique combined with social network analysis yields results that fit in with the sociological theory which considers ID as an element of cohesion of the ruling class (Useem, 1984; Mizruchi, 1992). In the absence of an investigation of a qualitative character, it seems to identify an inner circle made up of a group of individuals connected with the traditional upper class and with the political regime. This business, social and political elite could use ID to control the economy of a country in its own benefit, as the theory of entrenchment maintains. But the evidence that supports this type of analysis can only be the first step in a deeper investigation which would allow it to be verified. 6. CONCLUSIONS In these pages we have tried to show the necessity of realizing a business history supported by theory. The hypotheses developed by economic sociology and the organization of companies to explain the functionality of interlocking directorates have been examined in the Spanish case, applying network analysis. In the course of the investigation the following conclusions have emerged: 1. The corporate structure of the major Spanish companies has been dominated, at least until 1970, by the financial sectors, as previous works have pointed out. 2. Together with the financial sector, electricity, transport and mining have been the dominant sectors in inter-company relations, owing to the significant presence on their boards of directors originating from banks. 3. The above affirmations, together with the high centrality of the banks in the configuration of Spanish business groups, allow us to corroborate the validity of the hypothesis of resource dependence and financial control. The analysis of interlocking directorates in the electricity sector reinforces this hypothesis still more, once the individuals are identified and it has been shown that bank directors participate in a decisive fashion in the electricity business. 4. The theory of collusion, which led to the first studies of interlocking directorates, cannot be proven for the financial sector. Only in 1930 can a high connectivity be identified, and this is not the case in the other periods studied. This does not mean that collusion does not exist, since this could be exercised through other mechanisms. 5. In the electrical sector, the distribution of interlocking directorates indicates a strategy of a collusive type, that would affect the distribution of regional markets before the integration of the national market. 6. The analysis of the directors allows us to identify a business elite, linked to the political regime and the dominant social classes, which has maintained itself over time and can be interpreted as a power circle. 22 7. This relation between economic power and political power does not however allow us to subscribe wholeheartedly to the theory of entrenchment, although the validity of some of its elements appears confirmed. 8. 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