This study examines the determinants and interrelationships among corporate ownership and board structure characteristics using a sample of Singapore listed firms. The institutional environment in Singapore differs from that in many developed Western economies in several important respects, including a weak market for corporate control, more concentrated stock ownership, and significant government ownership in many private sector firms. Three characteristics—board composition, board leadership structure and board size—are used to capture the monitoring ability of the board. These board characteristics are assumed to be endogenously determined, together with two ownership characteristics, managerial ownership and blockholder ownership. We use two-stage least squares regression to estimate the determinants of board and ownership characteristics. Our findings indicate that corporate ownership and board structures are related, and that there are significant interrelationships among board structure characteristics. The proportion of outside directors is negatively related to managerial ownership, board size and government ownership. The use of a dual leadership structure is positively related to blockholder ownership, and negatively related to regulation and to CEO tenure

The traditional financial economics view of the determinants of board composition is based on outside shareholders' demand for external monitoring of management. In comparison, Hermalin and Weisbach (American Economic Review, 88 (1998) 96) model board composition as the outcome of a bargaining process between the CEO and the rest of the board. The model predicts, inter alia, that the bargaining power of the CEO relative to the rest of the board of directors will determine the level of independence of the board and the extent of board monitoring. This study tests Hermalin and Weisbach's model using a random sample of companies that are subject to limited regulatory constraints in relation to board composition and a common set of corporations regulations that may indirectly affect board composition. There is strong evidence that representation by outside directors varies inversely with CEO bargaining power, which is proxied by CEO tenure and inside shareholdings. An extension of the argument of Hermalin and Weisbach to board leadership is also tested. The results indicate that the appointment of the chairman of the board is also the outcome of a bargaining process between the CEO and the rest of the board with more powerful CEOs likely to hold the position of Chairman of the board. Together, these results suggest that more “powerful” CEOs are relatively entrenched and face fewer constraints and less monitoring than other CEOs. This evidence has potential relevance to current debates in relation to the need to control the number or proportion of outside directors