It is often argued that a mandatory minimum wage is binding only if the wage density displays a spike at it. In this Paper we analyse a model with search frictions and heterogeneous production technologies, in which imposition of a minimum wage affects wages even though, after imposition, the...

In this Paper we define and estimate measures of labour market frictions using data on job durations. We compare different estimation methods and different types of data. We propose and apply an unconditional inference method that can be applied to aggregate duration data. It does not require...

This paper discusses how employment vouchers should depend on age in a simple overlapping generations model in which workers are either young or old. We find that young workers should receive higher vouchers as displacement of the old rises and as the deadweight loss from providing vouchers to...

Long-term unemployment was regarded by contemporaries in the 1930's as a major problem but analysis of it has been neglected in modern economists' research. This paper presents data on durations of unemployment and a measure of the welfare costs associated with long-term unemployment. It is...

Reduced-form tests of scale effects in markets with search, run when aggregate matching functions are estimated, may miss important scale effects at the micro level, because of the reactions of job searchers. A semi-structural model is developed and estimated on a British sample, testing for...

We show how small initial wealth differences between low skilled black and white workers can generate large differences in their labour-market outcomes. This even occurs in the absence of a taste for discrimination against blacks or exogenous differences in the distance to jobs. Because of the...

Randomized experiments provide policy relevant treatment effects if there are no spillovers between participants and nonparticipants. We show that this assumption is violated for a Danish activation program for unemployed workers. Using a difference-in-difference model we show that the...

With the emergence of the Great Recession unemployment insurance (UI) is once again at the heart of the policy debate. In this paper, we review the recent theoretical and empirical evidence on the labor market effects of UI design. We also discuss policy issues related to UI design, including...

This Paper estimates the structural parameters of a job search model with hyperbolic discounting and endogenous search effort. It estimates quantitatively the degree of hyperbolic discounting, and assesses its implications for the impact of various policy interventions aimed at reducing...

This Paper exploits area-based piloting and age-related eligibility rules to identify treatment effects of a labour market program – the New Deal for Young People in the UK. A central focus is on substitution/displacement effects and on equilibrium wage effects. The programme includes...