A large exclusion from the labor market or an important unemployment of lowskilled workers is observed in numerous countries that set a minimum wage. Unemployment benefit or subsidizing low-skilled job policies can be mixed to deal with this situation. We introduce a matching model where...

National health systems organize and regulate two types of public policies : first, as any social policy would, they transfer income, from rich to poor and healthy to sick, as well as from patients to health care providers. Second, they regulate the production and delivery of health, an...

This paper proposes an intertemporal and consistent framework in order to measure the incentives for returning to employment. A job seeker accepts a job which maximizes the sum of his discounted expected incomes, taking into account earnings associated with every job, worker?s mobility between...

This paper considers the impact of macroeconomic fluctuations on the optimal level of public debt. Households are subject to both aggregate and idiosyncratic risk and insurance market imperfectness prevents them from from fully insuring against risk. We find that the optimal level of public debt...

We analyse back to work incentives taking into account intertemporal gains and worker mobility between jobs. Theoretically, we show that these incentives vary depending on the difference between replacement benefits and bad jobs wages. They are also sensible to the accessibility and stability of...

We extend McCall?s [1970] job search model by explicitly integrating life-cycle features and retirement decisions. Using simulations, we show that the effective tax on continued activity caused by the French social security system in conjunction with the generosity of unemploymentn benefits for...

Over the past twenty years, the growth in the use of ppps for news infrastructures did not knock down the bases of public economics. This article examines, however, in which measure it is advisable to modify the use of the cost-benefit analysis by the public authorities in the case of ppps, in...

Although expensive, monitoring is the most efficient mean to repress a criminal activity. This is typically included in economic models of crime thanks to a probability of detection, and only based on risk aversion. According to recent results in psychology literature, the perception of this...

The question of this paper is whether it is worth taxing the black market. A theoretical optimal tax model provides a first analytical discussion. An empirical version allows us to estimate an optimal tax system for Madagascar. For reasonable inequality aversion parameters, the taxation?s rate...

We examine the design of national emission taxes in an international trade setting with imperfect competition and trade costs. The main point of the paper is that there can exist a consistency problem with respect to tax policy in a setting where trade costs are positive. In particular, when...