The optimal income tax structure is studied in a setting in which workers make discrete labor market decisions and earnings are uncertain. Workers differ continuously along a single dimension that reflects their skills as well as their disutility of work in different jobs. A discrete number of...

Welfare programs including disability benefits have been considered as an efficient way of delivering transfers to the needy. This paper addresses the importance of administrative cost of welfare systems by focusing on an agency problem arising between the government and social workers, whose...

An optimal commodity tax approach is taken to compare trade taxes and VATs when some commodities are produced informally. Trade taxes apply to all imports and exports, including intermediate goods, while the VAT applies only to sales by the formal sector and imports. The VAT achieves production...

We study optimal nonlinear income taxation when earnings can differ because of both ability and luck, so the income tax has both a redistributive role and an insurance role. A substantial literature on optimal redistribution in the absence of uncertainty has evolved since Mirrlees’ original...