Was the increase in income inequality in the US due to permanent shocks or merely to anincrease in the variance of transitory shocks? The implications for consumption and welfaredepend crucially on the answer to this question. We use CEX repeated cross-section data onconsumption and income to...

This paper explores how cross-sectional data can be exploited jointly with longitudinal data,in order to increase estimation efficiency while properly tackling the potential bias due tounobserved individual characteristics. We propose an innovative procedure and we show itsimplementation by...

This paper derives the conditions under which fitness-reducing alleles can survive in a long-run stationary equilibrium for a trading population, extending the results in Saint-Paul (2002) for arbitrary systems of sexual reproduction.

We study effects of a firm's attempt to optimize an existing incentive scheme to increase sales growth for direct store delivery workers. Before optimization workers reported Ratchet Effects that lowered productivity. The altered incentive plan offered higher compensation for increased sales...

We analyze interaction effects of birth weight and the business cycle at birth on individual cardiovascular (CV) mortality later in life. In addition, we examine to what extent these long-run effects run by way of cognitive ability and education and to what extent those mitigate the long-run...

We analyze the impact of family-friendly policies on women?s career breaks due to childbirth in Denmark and Sweden. In both countries, the labour force attachment of mothers is high, and more than 90% of the women return to work after childbirth. Sweden and Denmark are culturally similar and...

This paper discusses the evaluation problem using observational data when the timing of treatment is an outcome of a stochastic process. We show that the duration framework in discrete time provides a fertile ground for effect evaluations. We suggest easy-to-use nonparametric survival function...

We study immigrants in temporary employment agencies in Sweden using a unique data set that covers all aged 16-64 who were employed by temporary employment agencies (TEAs) in Sweden in November 1999, with information on their employment status in 1998 and 2000. We find that young people, women,...

Immigrants have a weak position in the labour market in most European countries. Many have difficulties in establishing themselves in the labour market, the employment rate is low and the hourly wages are generally lower than what could be expected from characteristics (age, gender, education)....

In most industrialized countries the majority of employed people are full-time employees with a non-temporary job and work at a workplace of the company in which they are employed. They are making careers at the employer they are employed by and most work-place changes are to other jobs of the...