"This paper uses new administrative data from the German Federal Employment Agency - the Integrated Employment Biographies Sample IEBS - to assess the impact of a mandatory employment quota for disabled workers in Germany. We use an exogenous change, introduced through the 'Law to Combat...

I test some predictions of Gary Becker’s theory of taste discrimination regarding discrimination of foreigners by employers, co-workers and customers. I combine a 2% sample of the German working population and a 50% sample of German plants with low-level regional data, including the vote...

Twin births are often used as an instrument for fertility in models investigating the impact of family size on labour market and child outcomes. However, a large share of twin births (24% in our sample) are the result of fertility treatments, potentially causing twin births to be endogenous and...

This paper uses street-level data on house sales and crime rates for England and Wales to look at the existence of compensating differentials for crime risk. In terms of identification my strategy relies on the use of non-parametric regional time trends as well as various fixed effects to...

I exploit exogenous variation in the likelihood to obtain any sort of educational qualification between January- and February-born individuals for 13 academic cohorts in England. For these cohorts compulsory schooling laws interacted with the timing of the CSE and O-level exams to change the...

We use unique rich data for German manufacturing enterprises to investigate the product diversification – firm performance relationship.We find that an increase in the degree of product diversification has a negative impact on profitability when observed and unobserved firm characteristics are...

In this study, we use a unique rich newly built data set for German manufacturing enterprises to investigate the relationship between product diversification and the stability of sales and employment. We find that contrary to portfolio theoretic considerations, more diversified firms exhibit a...