CEO Duality and Firm Performance: Does Economic Policy Uncertainty Mediate the Relation?

Kiyoung Chang, Junyoup Lee and Hyeongsop Shim

International Review of Finance, 2019, vol. 19, issue 4, 877-891

Abstract: Exploiting two exogenous shocks, we examine the relation between CEO–Chairman duality and firm performance. We report evidence that CEO duality benefits a firm when economic policy uncertainty is high. This implies that CEO–‐Chairman duality is an advantageous governance mechanism for coping with economic policy uncertainty. We show that the Sarbanes‐Oxley Act reduced firm performance if a firm had separate leadership in 2001. However, this negative effect was mitigated if a firm had combined leadership in 2001. The results suggest that CEO duality is complementary to board independence and that the value of CEO duality is contingent on a firm’s environment.

Date: 2019
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