In a large class of hazard models with proportional unobserved heterogeneity, the distribution of the heterogeneity among survivors converges to a gamma distribution. This convergence is often rapid. We derive this result as a general result for exponential mixtures and explore its implications...

We analyze the effect of economic conditions early in life on individual mortality rate later in life, using business cycle conditions early in life as an exogenous indicator. Individual records from Dutch registers of birth, marriage, and death, covering a window of unprecedented size...

This paper uses longitudinal survey data to assess factors affecting the duration of unemployment in Russia. We examine four types of marginalised labour force participants, according to ILO guidelines and survey responses, and we estimate duration models for each type. It turns out that the...

This discussion paper has resulted in chapter 2 in: 'Losing Work, Moving On: International Perspectives On Worker Displacement', Peter J. Kuhn, Ed., 2002, W.E. Upjohn Institute for Employment Research, Kalamazoo, MI, ISBN 0-88099-234-4.

Labor market theories allowing for search frictions make marked predictions on the effect of the degree of frictions on wages. Often, the effect is predicted to be negative. Despite the popularity of these theories, this has never been tested. We perform tests with matched worker-firm data. The...

This paper examines the empirical analysis of treatment effects on duration outcomes from data that contain instrumental variation. We focus on social experiments in which an intention to treat is randomized and compliance may be imperfect. We distinguish between cases where the treatment starts...

Youth unemployment is an issue of primary concern in Western European countries. In this paper we analyze dynamics in unemployment for youths, adults (prime-aged individuals), and elderly. We use quarterly French unemployment data, stratified by gender, age group, and duration, over the period...

In the Netherlands, students who want to become a medical specialist have to enrol in a training program which is in limited supply. During the search for a position as trainee (or "junior medical specialist"), they may accept a temporary job as a medical assistant. We use a micro data set to...

Equilibrium search models are useful tools for the evaluation of labor market policies. Recently developed equilibrium search models of the labor market are able to fit the wage distribution perfectly with longitudinal labor supply data, by estimating an appropriate distribution of labor...