A l’heure de l’économie du savoir et de la connaissance, l’éducation est devenue un enjeu majeur et l’enseignement a acquis une place centrale dans le processus de production d’éducation. Dans ces conditions, sont recherchés les moyens d’augmenter la performance des enseignants...

This paper studies an R&D outsourcing contract between a firm and a contractor, considereing the possibility that in the interim stage, the contractor might sell the innovation to the rival firm. Our result points out that due to the competition in the interim stage, the reward needed to prevent...

In this paper, we study a pure exchange economy with idiosyncratic uncertainty, hidden action and multiple consumption goods. We consider two different market structures : contingent markets on the one hand, and financial and spot markets on the other hand. We propose a competitive equilibrium...

Empirical testing of asymmetric information in the insurance market has uncovered a negative correlation between risks levels and insurance purchases, rather than the positive correlation predicted by the standard insurance theory. Hemenway (1990) proposes an explanation for this negative...

We study information revelation in markets with pairwise meetings. We focus on the one sided case and perform a dynamic analysis of a constant entry flow model. The same question has been studied in an identical framework in Serrano and Yosha (1993) but they limit their analysis to the...

Some empirical works from the nineties have shown the existence of a negative relationship between inequality and growth. In this paper I show that the inefficiency of the Public Sector due to agency problems can be a new element that must e considered to explain the negative empirical...

This paper analyzes the effects of the marginal tax rate on unemployment and economic efficiency in a matching model with homogenous agents when wages and working hours are bargained over. I show that the theoretical impact of a higher marginal tax rate on unemployment is ambiguous whatever the...

This paper characterizes the optimal redistributive taxation when individuals are heterogeneous in two exogenous dimensions : Their skills and their values of non-market activities. Search-matching frictions on the labor markets create unemployment. Wages, labor demand and participation are...

We survey some recent results on implementation of competitive solutions in differential economies. Extending to this context Arrow and Debreu’s definitions raises many conceptual issues. For instance, some properties of rational expectations equilibria may appear as paradoxical. In order to...

This paper addresses the question of delegation in an organization where there is an initial asymmetry of information between the principal and the agent. We assume that the principal cannot use revelation techniques à la Baron Myerson to elicit agent's superior information and in contrast, we...