Regulators and governance activists are pressuring firms to abolish CEO duality (the Chief Executive Officer is also the Chairman of the Board). However, the literature provides mixed evidence on the relation between CEO duality and firm performance. Using the exogenous shock of the 1989 Canada–United States Free Trade Agreement, we find that duality firms outperform non-duality firms by 3–4% when their competitive environments change. Further, the performance difference is larger for firms with higher information costs and better corporate governance. Our results underscore the benefits of CEO duality in saving information costs and making speedy decisions.

Directors’ and officers’ liability insurance (D&O insurance) is one of the most controversial and least understood governance tools. Using manually collected voting data for all director types at Chinese listed firms, we provide the first evidence for the impact of D&O insurance on directors’ voting decisions and the subsequent effects on corporate governance and financial performance. We find that independent directors at firms carrying D&O insurance are more likely to dissent when benchmarked against their peers in the same firm on the same proposal. Our results are robust to endogeneity checks. We identify channels through which the incentive effects of D&O insurance operate. We also find that the positive effect of D&O insurance on independent director dissension is associated with better firm performance and monitoring outcomes, including less litigation and lower claim values, less underinvestment, better internal control quality, and improved CEO pay- and turnover-performance sensitivities.