We investigate a multi-agent moral-hazard model where agents have expectation-based reference-dependent preferences a la Koszegi and Rabin (2006, 2007). We show that even when each agent's probability of success in a project is independent, team incentives can be optimal. Because the agents are...

This paper studies the optimal contracts in a multitask model when a principal-agent relationship is long-term. If some outcomes are unverifiable, then the contracts have to satisfy the self-enforcing condition. I characterize the optimal contract in terms of the discount rate, the cost...