We derive a general optimal income tax formula when individuals respond along both the intensive and extensive margins and when income effects can prevail. Individuals are heterogeneous across two dimensions: their skill and their disutility of participation. Preferences over consumption and...

We develop a methodology to sign output distortions in the random participation framework. We apply our method to monopoly nonlinear pricing problem, to the regulatory monopoly problem and mainly to the optimal income tax problem. In the latter framework, individuals are heterogeneous across two...

This paper studie the optimal income redistribution and monitoring when disability benefits are intended for disabled people but where some able agents with high distastes for work mimic them (type II errors). Labour supply responses are at the extensive margin and endogenous takeup costs burden...

In recent years Western governments have introduced a number of emergency measures in their fight against short run unemployment. In this paper a normative analysis concerning the joint implementation of two such measures is offered, viewing unemployment as involuntary, and taking account of the...

Very few studies have explored the optimality properties of the "standard model" of fertility where parents must determine their optimal trade-off between quality and quantity. The present paper works to fill that gap and find three main results. First, when there exist positive externalities in...

The current unemployment insurance and employment protection legislation were set up in an economic environment in which relationships between workers and firms were typically lon-lastingand stable. The increasing globalisation of the economy and the rapid technological and organisational...

L'objet de cet article est de relier les préférences des consommateurs pour les produits verts, les décisions d'investissement dans la recherche et le développement d'une industrie polluante et l'optimalité de la taxation de ses émissions polluantes dans le cadre des jeux en trois étapes...

Using the Mirrlees optimal income tax model with a maxi-min social welfare function, we derive conditions for a decreasing marginal tax rate throughout the skill distribution, a strictly concave tax function in income and a single-peaked average tax schedule. With additive preferences and a...

The burden sharing of pollution abatement costs raises the issue of how to share the costs between entities (country, region or industry) and how the pollution permits should be distributed between the parties involved. This paper explores this issue in the framework of a dynamic endogenous...

Cet article montre que dans le cadre d’un modèle d’appariement, la coexistence d’emplois de durées du travail différentes peut s’expliquer par des intensités capitalistiques propres à certaines activités. les firmes sont supposées financer seules le capital nécessaire à la...