Why do firms allow their executives to accept outside directorships? Are firms acting in the best interests of their shareholders by allowing them to do so? We develop a theoretical model where accepting an outside directorship alters the CEO's effect on the value of the home firm. Our model illustrates that executives will choose to spend more time on external directorships than is optimal for the home firm. Our theoretical model is consistent with other recent empirical finance research on the effects of external directorships.

We model CEO and director compensation using firm characteristics, CEO characteristics, and governance variables. After controlling for monitoring proxies, we find a significant positive relationship between CEO and director compensation. We hypothesize that this relationship could be due to unobserved firm complexity (omitted variables), and/or to excess compensation of directors and managers. We also find evidence that excess compensation (both director and CEO) is associated with firm underperformance. We therefore conclude that the evidence is consistent with excessive compensation due to mutual back scratching or cronyism. The evidence suggests that excessive compensation has an effect on firm performance that is independent of the poor governance variables discussed by previous studies.