De récents événements ont remis sur le devant de la scène la dangerosité potentielle du virus de la grippe (épidémie de Hong-Kong 1997...). Le vaccin, généralement jugé efficace, reste pourtant sous-utilisé par rapport aux avantages qu'il procure. Pendant plusieurs décennies, les...

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.