Taxes and employment subsidies in optimal redistribution programs

This paper explores how to optimally set taxes and transfers when taxation authorities: (1) are uninformed about individuals? value of time in both market and non-market activities and (2) can observe both market-income and time allocated to market employment. We show that optimal redistribution in this environment involves distorting market employment upwards for low wage individuals through decreasing wage-contingent employment subsidies, and distorting employment downwards for high wage individuals through positive and increasing marginal income tax rates. In particular, we show that whether a person is taxed or subsidized depends primarily on his wage, with the optimal program involving a cut-off wage whereby workers above the cutoff are taxed as they increase their income, while workers earning a wage below the cutoff receive an income supplement as they increase their income. Finally, we show that the optimal program transfers zero income to individuals who choose not to work.