The Influence of Board Structure on the Value of NZX Listed Firms and its Association with Growth Options

Abstract

Our study examines the relationship between four indicators of board structure and firm value and the extent to which this relationship may be affected by the level of growth options relative to assets-in-place. These indicators are the level of accounting expertise, gender diversity, the level of independence and the size of the board. Using a sample of 543 firm-years covered by 125 firms listed on the New Zealand Exchange for the 1998-2007 financial years, we found that these board structure indicators together with the level of growth options significantly impact on firm value after effectively controlling for the endogeneity problem. Specifically, firms with a lower number of directors with accounting expertise and/or a higher number of female directors on the board have higher firm value. For firms with a higher level of growth options, a higher percentage of independent directors on the board and/or a larger board are more value relevant. Our findings related to board accounting expertise and board gender diversity particularly may have important implications for corporate regulators.