We study optimal incentive contracts with multiple agents when performance evaluation is delegated to a reviewer. The reviewer may be biased in favor of the agents, but the degree of the bias is unknown to the principal. We show that a contest, which is a contract in which the principal...

I present a model in which a principal selects one among many agents to develop a project and influences the agent's ex post level of effort not by outcome-contingent rewards, but by the choice of the project's mission. The closer the project's mission to the agent's preferred mission, the...