We examine the relation between outside board directors and six measures of financial performance using panel data for 1999–2012 drawn from the UK’s property-casualty insurance industry. We find that the proportion of outsiders on the board is unrelated to performance; rather it is outsiders’ financial expertise that has the most significant financial performance impact. In addition, superior performance can also be related to the financial expertise of inside directors, thereby reinforcing the importance of board-level financial expertise in the insurance industry. Our results have potential commercial and/or policy implications.

This study examines the impact of auditor specialization on bank loan loss provisions for a large cross-section of US banks for the period 2002–2006. We find a positive relationship between earning (before provision) and loan loss provision, suggesting that bank managers use LLP to smooth earnings in the post-SOX period. However, this relationship is significantly moderated by audit industry expertise, providing strong evidence that industry specialization constrains income smoothing. In further analysis, we find some evidence that auditor specialization is more effective in reducing potentially incoming-increasing earnings management. Our results hold after controlling for self-selection bias and are robust to alternative measures of industry specialization. Overall, our findings support the conclusion that audit industry expertise plays an effective monitoring role in constraining management’s discretionary accounting choices.