We present a model in which a motivator can take costly actions - or what we call motivational effort - in order to reduce the effort costs of a worker, and analyze the optimal combination of motivational effort and monetary incentives. We distinguish two cases. First, the firm owner chooses the...

We analyze optimal contracts in a hierarchy consisting of a principal, a supervisor and an agent. The supervisor is either neutral or altruistic towards the agent, but his preferences are private information. In a model with two supervisor types, we find that the optimal contract may be very...

We study a relational contracting model with two agents where each agent faces multiple tasks: effort toward the agent's own project and helping effort toward another agent's project. We first propose the two-step approach, which is useful for characterizing the equilibrium of relational...

Incentives often fail in inducing economic agents to engage in a desirable activity; implementability is restricted. What restricts implementability? When does re-organization help to overcome this restriction? This paper shows that any restriction of implementability is caused by an...

I analyze how a firm should elicit advice from an expert on when to terminate a project with a stochastic lifespan. The firm cannot directly observe the project's lifespan, but imperfectly monitors its current state by observing incremental output. The expert directly observes the state of the...

This article explores a dynamic moral hazard setting in which a principal hires a team of agents for a project. As the project generates revenue upon completion, the principal incentivizes agents' efforts by designing bonuses for success. If bonuses are provided through spot or...

Incentives often fail in inducing economic agents to engage in a desirable activity; implementability is restricted. What restricts implementability? When does re-organization help to overcome this restriction? This paper shows that any restriction of implementability is caused by an...

This paper studies how firms can efficiently incentivize supervisors to truthfully report employee performance. To this end, I develop a dynamic principal-supervisor-agent model. The supervisor is either selfish or altruistic towards the agent, which is observable to the agent but not to the...

Standard principal-agent theory predicts that large firms should not use employee stock options and other stock-based compensation to provide incentives to non-executive employees. Yet, business practitioners appear to believe that stock-based compensation improves incentives, and mounting...

We consider a situation where an agent's effort is monitored by a supervisor who cares for the agent's well being. This is modeled by incorporating the agent's utility into the utility function of the supervisor. The first best solution can be implemented even if the supervisor's preferences are...