This paper investigates whether entrepreneurs with technical education are more innovative in high-tech industries than economists. The main contribution to the literature is in using the type of education as main explanatory variable for innovation. To analyze this question, the KfW/ZEW...

In this paper we present a new approach to evaluate the environmental efficiency of decision making units. We propose a model that describes a two-stage process consisting of a production and an end-of-pipe abatement stage with the environmental efficiency being determined by the efficiency of...

This work investigates the interrelation between production efficiency and population size of German cities. The productive efficiency in this context is the scale efficiency, which is a result of positive and negative agglomeration externalities. The investigation is performed in a two-stage...

Is there a reward for basic skills in the German labor market? To answer this question, we examine the relationship between literacy, numeracy and monthly gross earnings of full-time employed workers. We use data from the ALWA survey, augmented by test scores on basic cognitive skills as well as...

Wir untersuchen den Beitrag von betriebsspezifischen Lohnaufschlägen, die in jüngerer Zeit zur Erhöhung der Lohnungleichheit in Westdeutschland beigetragen haben. Es werden Modelle mit additiv fixen Effekten für Arbeitnehmer und Betriebe für vier verschiedene Zeitintervalle über den...

Trotz umfangreicher staatlicher Programme zur Bekämpfung von Obdachlosigkeit kann diese mit den üblicherweise eingesetzten Mitteln nur verringert, aber nicht gänzlich beseitigt werden. Deshalb ist es wichtig, zusätzliche Faktoren, die zur Entstehung von Obdachlosigkeit beitragen, zu...

We revisit the puzzling finding that labour market performance appears to deteriorate, as suggested by negative time trends in empirical matching functions. We investigate whether these trends simply arise from omitted variable bias. Concretely, we consider the omission of job seekers beyond the...