What are the implications of imperfect competition in labor markets for optimal labor income taxes? I study this question in an Aiyagari (1994) incomplete-market economy with idiosyncratic risk, borrowing constraints, and the new feature that jobs are differentiated from workers' perspective and...

In this paper we argue that very high marginal labor income tax rates are an effective tool for social insurance even when households have preferences with high labor supply elasticity, make dynamic savings decisions, and policies have general equilibrium effects. To make this point we construct...