We characterize the competitive equilibrium on the credit market when borrowers can strategically default. We assume that the audit is subject of errors of the two types and that lenders cannot commit ex-ante. We determine the penalty, the loan rate, the audit and strategic default...

In this note, we generalize the results obtained by Barday and Lesur (2005) by considering a bivariated non separable utility function. We characterize optimal health insurance contracts. Moreover, we show that under moral hazard a sufficiently high risk aversion implies that the optimal...

In this note, we intend to characterize conditions such that adverse selection is irrelevant in health insurance. We show that a condition is that policyholders health status is sufficiently reduced by illness.

We analyze a Principal-Agent model of an insurer who faces an adverse selection problem. He is unable to observe if his client has a high risk or a low risk of having an accident. At the underwriting of the contract, the insurer requests the client to declare his risk. After that, the former can...