Heterogeneity is likely to be an important determinant of the shape of optimal tax schemes. This article addresses the issue in a model à la Mirrlees with a continuum of agents. The agents differ in their productivities and opportunity costs of work, but their labor supplies depend only on a...

The paper analyses the impact of centrally regulated pay on the quality of applicants to be police officers in England and Wales using a unique dataset of individual test scores from the national assessment that is required of all applicants. It provides empirical evidence of two distinct...

This paper uses individual data on employment and wages to shed light on the UK's productivity puzzle. It finds that workforce composition cannot explain the reduction in wages and hence productivity that we observe; instead, real wages have fallen significantly within jobs. Why? One possibility...

We study optimal taxation in the general extensive model: the only decision of the participants in the economy is to choose between working (full time) or staying inactive. People differ in their productivities and in other features which determine their work opportunity costs. The qualitative...