For the last two decades, board diversity is increasingly considered as a significant mechanism of good corporate governance. Thus, the question arises whether a heterogeneously or rather a homogenously composed board contributes to the efficiency of a company's management and monitoring....

In 2002, an amendment to UK parliamentary regulations removed restrictions on the participation of members of parliament (MPs) in parliamentary proceedings related to their corporate interests. Using this amendment as a quasi-natural experiment, we demonstrate gains in firm value and...