We examine a principal-agent model with moral hazard in which the technology – the vector of probability distributions from the agent’s actions to the possible outcomes – is initially unknown. A signal correlated with the technology is observed after the principal and agent agree to the...

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 principal-agent environment with moral hazard and symmetric information, having or acquiring a more informative technology lowers the cost to implement a given action. Contracting may occur after or before the principal learns her technology. We show that when the principal has or will...

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...