Individuals, initially living in a Mirrleesian economy A, have outside options consisting in settling down in a laissez-faire country B while paying positive migration costs. We first examine the effect of the threat of migration, assuming participation constraints are taken into account for all...

We investigate under which conditions it is possible to infer the evolution of poverty at the individual level from the knowledge of poverty among households. Poverty measurement is approached by the poverty orderings introduced by Foster and Shorrocks (1988). The analysis is based on a reduced...

This paper examines a reform of the French welfare system. More precisely, it is a question of granting a decreasing benefit according to earned income. The modulation of this benefit according to the family size and the rent is clarified in detail. Several alternatives of the reform are...