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The IUP Journal of Corporate Governance
Impact of Governance Instruments on the Productivity of Nigerian Listed Firms
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Superior financial performance, hypothesized of better governed firms, is presumed to have its derivation in improved productivity. Utilizing the data for 64 non-financial firms listed under the first tier securities market of the Nigerian Stock Exchange for the period 2002 to 2006, the paper investigates the impact of corporate governance on firms' productivity performance in Nigeria. Employing panel regression techniques, it establishes governance measures like ownership concentration and debt-equity ratio as drivers of firms' productivity, while the impacts on productivity of other major governance mechanisms like board size, board independence and independent audit membership, are insignificant. However, it is suggested that caution be exercized in relying on findings that show financial performances as governance enhanced, as financial measures can be more easily distorted by prices, market imperfections and the choice of accounting techniques.

 
 
 

Modern day business has always suffered from the dilemma of the sole goal of profit maximization or the satisfaction of other goals like personal interests of managers and other stakeholders. This phenomenon has attracted attention, especially under the principal-agency problem of firms (Ross, 1973; and Jensen and Meckling, 1976) and the stakeholders' theory (Freeman, 1984; Jones, 1992; Donaldson and Preston, 1995; Frooman, 1999; and Hill and Phillips, 2004). Contemporarily, these issues are swathed in the tenets of corporate governance. Corporate governance, according to John and Senbet (1998), involves stakeholders' attempts to ensure that managers and other insiders adopt mechanisms that safeguard their interests. Theoretically, corporate governance practices are expected to focus the board's attention on optimizing the company's operating performance and returns to shareholders.

In Nigeria, studies have shown that, largely, the institutions and the legal framework for effective corporate governance appear to be in existence (Oyejide and Soyibo, 2001; and Adelegan, 2007a). However, the corporate governance structure in the country is characterized by weak or non-existent compliance, and/or enforcement (Oyejide and Soyibo, 2001; and Wilson, 2006), and a weak market for corporate control (Adelegan, 2007a). This is aggravated by the fact that most businesses in the formal sector are not publicly listed and nearly 87% of the formal sector businesses are not operated outside the legislation governing the capital market (Oyejide and Soyibo, 2001). Other factors like underdevelopment and the emerging nature of the Nigerian capital market, as characterized by the thinness of trading, low market capitalization, low percentage of turnover level, and low liquidity of the market (Adelegan, 2004), can also be said to impair the effectiveness of corporate governance mechanisms.

 
 
 

Corporate Governance Journal, Corporate Governance, Capital Market, Corporate Governance Mechanisms, Nigeria Security and Exchange Commission, SEC, Corporate Affairs Commission, CAC, Central Bank of Nigeria, CBN, Companies and Allied Matters Decree, CAMD, Nigerian Gross National Product, Akaike Information Criterion, AIC, Regression Analysis, Nigerian corporations, Corporate Governance Indicators.