This discussion paper resulted in a publication in the <A href="http://www.sciencedirect.com/science/article/pii/S0014292112001493">'European Economic Review'</A> 2013, 58, 31-57.<P> In this paper, we use a recent policy change in the Netherlands to study how changes in search requirements for the older unemployed affect their transition rates to employment, early retirement...</p></a>

In this paper we estimate, for the 1989-93 period in Belgium, the effect of vocational classroom training on therate of transition out of unemployment. We show that rationing of the demand for training increases theunemployment duration of non-participants, an effect neglected in programme...

Availability of (partial) insurance mechanisms is arguably important for the decision of (riskaverse) workers to start up a risky entrepreneurial venture. Using administrative data from Denmark, where unemployment insurance (UI) is available to both wage earners and self-employed on a voluntary...

This discussion paper resulted in a publication in the <A href="http://press.uchicago.edu/journals/jole/forthcoming.html?journal=jole">'Journal of Labor Economics'</A>, forthcoming.<P> Parental entrepreneurship is a strong, probably the strongest, determinant of own entrepreneurship. We explore the origins of this intergenerational association in entrepreneurship. In particular,...</p></a>

We analyze a general search model with on-the-job search and sorting of heterogeneous workers into heterogeneous jobs. This model yields a simple relationshipbetween (i) the unemployment rate, (ii) the value of non-market time, and (iii) themax-mean wage differential. The latter measure of wage...

Using 'search' theory, technology adoption is conceived of as a critical factor in the aftermath of a technological shock, which increases employment in the leading sectors and total output in the economy. These implications are further investigated in the present paper, both formally and...

This discussion paper led to a publication in <A href="http://www.jstor.org/stable/full/10.1086/660798">'The Journal of Labor Economics'</A>, 29(4), 859-92.<p>This paper uses a relatively new approach to investigate the effect of parents' schooling on child's schooling; a nonparametric bounds analysis based on Manski and Pepper (2000), using the most recent...</p></a>

An advantage of collective wage agreement is that search and business-stealing externalities can be internalized. A disadvantage is that it takes more time before an optimal allocation is reached because more productive firms (for a particular worker type) can no longer signal this by posting...

This discussion paper resulted in an article in <I>Management Science</I>. Volume 59 issue 7, pages 1514-1528.<P> This paper reports on a field experiment conducted to estimate the impact of the share of women in business teams on their performance. Teams consisting of undergraduate students in business...</p></i>

We study the effects of a field experiment designed to motivate employee ideas, at a large technology company. Employees were encouraged to submit ideas on process and product improvements via an online system. In the experiment, the company randomized 19 account teams into treatment and control...