This paper studies optimal insurance against idiosyncratic wage shocks in a life cycle model with intensive labor supply and endogenous retirement. When the fixed cost of work is increasing in wage, the optimal retirement wedge provides stronger incentives for delayed retirement with age....

Half of the jobs in the U.S. feature pay-for-performance. We study nonlinear income taxation in a model where such labor contracts arise as a result of moral hazard frictions within firms. We derive novel formulas for the incidence of arbitrarily nonlinear reforms of a given tax code on both...