The principal means by which individuals and families achieve economic self-sufficiency is through labor market earnings. As a consequence, it is natural for policy makers to look to interventions that increase the ability of individuals and families to achieve an adequate standard of living...

We derive a sufficient statistics optimal tax formula in a general model that incorporates unemployment and endogenous wages, to study the shape of the tax and transfer system at the bottom of the distribution. The sufficient statistics are the macro employment response to taxation and the micro...