Interaction effects capture the impact of one explanatory variable x1 on the marginal effect of another explanatory variable x2. To explore interaction effects, so-called interaction terms x1x2 are typically included in estimation specifications. While in linear models the effect of a marginal...

Over the last decades the German education system underwent numerous reforms in order to improve equality of opportunity, i.e. to guarantee all pupils equal access to higher education. At the same time internationally comparative evidence yields that Germany features particularly low...

We study the labor supply effects of a change in child-subsidy policy designed to both increase fertility and shorten birth-related employment interruptions. The reform yields most of the intended effects.

This study tests to what degree the incidence of payroll taxes in Germany is on employment and whether in consequence payroll taxes, in particular social insurance contributions, are the culprit behind the growing unemployment problem. Using industry level data for 18 years (1977-1994) we...

The security of energy supply has again become a similarly hot topic as it was during the oil crises in the 1970s, not least due to the recent historical oil price peaks. In this paper, we analyze the energy security situation of the G7 countries using a statistical risk indicator and empirical...

We study the labor supply effects of a major change in child-subsidy policy in Germany in 2007 designed to both increase fertility and shorten birth-related employment interruptions. The reform involved a move from a means-tested maternity leave benefit system that paid a maximum of 300 Euro for...

This article studies the long run patterns and explanations of wage mobility as a characteristic of regional labor markets. Using German administrative data we describe wage mobility since 1975 in West and since 1992 in East Germany. Wage mobility declined substantially in East Germany in the...

This paper summarizes the findings of studies which investigate the determinants of wages in Germany, using data of the German Socioeconomic Panel (GSOEP). The empirical analyses apply least squares estimates as well as the estimators developed by Altonji and Shakotko (1987) and Topel (1991)....