In the present paper, I analyze how unobservable savings affect risk sharing and bankruptcy decisions in the financial system. I extend the Diamond and Dybvig (1983) model of financial intermediation to an environment with heterogeneous intermediaries, aggregate uncertainty and agents' hidden...

This paper studies the design of unemployment insurance when neither the searching effort nor the savings of an unemployed agent can be monitored. If the principal could monitor the savings, the optimal policy would leave the agent savings-constrained. With a constant absolute risk-aversion...

We provide sufficient conditions for the validity of the first-order approach for two period dynamic moral hazard problems, where the agent can save and borrow secretly. We show that in addition to the concavity requirements for the standard moral hazard problem, non-increasing absolute risk...

We analyze a dynamic moral hazard setting, in which agents can borrow and lend and their decisions about effort, consumption and savings are private information. In contrast with previous findings, we show that as long as agents do not have perfect control over publicly observable outcomes, the...

Golosov et al. (2003) have extended Atkinson and Stiglitz's uniform tax prescription to a dynamic Mirrlees' (1971) economy under the assumption that the government fully controls the agent's savings. When savings are not controlled by the government we show that the result is no longer valid:...

We propose a tractable recursive framework to study the optimal allocation of consumption and effort in a dynamic setting with moral hazard where agents have secret access to the credit market or to storage. The recursive structure is based on a generalized first order approach, whose validity...