Consider an agent who can costlessly add mean-preserving noise to his output. To deter such risk-taking, the principal optimally offers a contract that makes the agent's utility concave in output. If the agent is risk-neutral and protected by limited liability, this concavity constraint binds...

Societies provide institutions that are costly to use, but able to enforce long-run relationships. We study the optimal decision problem of using self-governance for risk sharing or governance through enforcement provided by these institutions. Third-party enforcement is modelled as a costly...

"This paper focuses on avoidable moral hazard and offers one explanation for limited insurance markets, for closely held firms, and for seemingly simple as opposed to contingent forms of debt. Agents have random endowments of a consumption good which are such that there are gains to trading...

"Economic models of contract typically assume that courts enforce obligations on the basis of verifiable events. As a matter of law, this is not the case. This leaves open the question of optimal contract design given the available remedies that are enforced by a court of law. This paper shows...

This paper investigates how contract specificities affect the performance of municipal infrastructure projects in the transportation, district heating, water, waste water and solid waste sectors. Using data from projects financed by the European Bank for Reconstruction and Development, we look...