The present Paper investigates political constraints that may impair attempts to reform payment schemes of a given profession. When the good produced (e.g. health care) is imperfectly observable by the payer (e.g. health insurance), asymmetries of information limit the possibility to base...

An intricate web of claims and obligations ties together the balance sheets of a wide variety of financial institutions. Under the occurrence of default, these interbank claims generate externalities across institutions and possibly disseminate defaults and bankruptcy. Building on a simple model...

An unfunded Social Security system faces a major risk, sometimes referred to as ‘political risk’. In order to account properly for this risk, the paper considers a political process in which the support to the system is asked from each newborn generation. The analysis is conducted in an...

We analyze optimal taxation in an economy with monopsonistic labour markets. The individuals, whose only decisions are whether to work, or not, have heterogeneous productivities and opportunity costs of work. Given its preferences for redistribution, the government, which does not observe the...

There has been little empirical work evaluating the sensitivity of fertility to financial incentives at the household level. We put forward an identification strategy that relies on the fact that variation of wages induces variation in benefits and tax credits among 'comparable' households. We...

Commentators have often linked the increase in births in France since 1995 to more generous family benefits. We study here empirically the link between fertility and financial incentives by estimating and simulating a joint structural model of participation and fertility on a sample of French...

The purpose of this paper is to study the causes of unemployment empirically, using individual data and an approach which refines that of Meyer and Wise. Using the French 1997 Labour Survey data, we decompose non-employment of married women into three components: voluntary, classical (due to the...