This paper aims to propose a social protection system that "decommodifies" labour and fulfills the properties of a Social Protection Floor satisfying revenue-neutrality. To this end, firstly, a Universal Basic Income (UBI) scheme is explored. Secondly, the UBI is transformed into a Negative...

This paper highlights the possibility that negative marginal tax rates arise in an intensive-margin optimal income tax model where wages are exogenous and preferences are homogeneous, but where agents differ both in skills (labor market productivity) and their needs for a work-related...