We propose a theory explaining the shape of contracts between local governments and the contractors they hire to run public facilities on their behalf. Governments are privately informed over the quality of the facility and risk-averse while risk-neutral contractors are subject to a moral hazard...

We investigate the issue of implementation via individually rational ex-post budget-balanced Bayesian mechanisms. We demonstrate that all social choice rules that generate a nonnegative ex-ante surplus, including ex-post efficient ones, can generically be implemented via such mechanisms for any...

In a class of informed principal problems with common values often used in applications we de…fine a particular mechanism which we call the assured allocation. It is always undominated, i.e. efficient among the different types of the principal. We show it is a perfect Bayesian equilibrium...