Public debate about the welfare state in OECD countries has emphasized the
need for reform to meet a twofold set of shocks: budgetary pressure and a l
abour market shift against unskilled workers. The aim of the paper is to se
t out a framework for examining the implications of these shocks for the op
timal scale of social transfers and in particular, the impact on different
societies, distinguishing a restricted welfare state, labelled "the United
States" and a more extensive welfare state, labelled "Continental Europe".