This paper observes sexual orientation based differences in German incomes. Gay men and lesbian women sort themselves into different occupations and sectors than their heterosexual counterparts. I find evidence that cohabitating gay men have an income penalty of 9 to 10 percent compared with...

This paper presents the first empirical test with German firm level data of a hypothesis derived by Bustos (AER 2011) in a model that explains the decision of heterogeneous firms to export and to engage in R&D. Using a non-parametric test for first order stochastic dominance it is shown that, in...

In Germany, for the reporting year 2009 transaction-level data on exports and imports of goods have been aggregated at the level of the exporting or importing firm for the first time. In these data the number of goods exported and imported and the number of countries exported to and imported...

Export is dominated by enterprises that trade more than one good with customers in more than one destination country. Germany, one of the leading actors on the world market for goods, is a case in point. Theoretical models of multiple-product, multipledestination exporters that can guide...

Feenstra and Ma (2008) develop a monopolistic competition model where firms choose their optimal product scope by balancing the profits from a new variety against the costs of cannibalizing sales of existing varieties. While more productive firms always have a higher market share, there is no...

Mit einem Paneldatensatz für sämtliche niedersächsischen Industriebetriebe der Jahre 1995 bis 2002 werden drei Hypothesen aus dem Modell von Hopenhayn (Econometrica 1992) getestet: (H1) Firmen, die in der Periode t aus dem Markt ausscheiden, waren in der Periode t-1 weniger produktiv als...

Using a knowledge production framework and a rich set of plant level data this study demonstrates that in Germany firms that are active on international markets as exporters or foreign direct investors do generate more new knowledge than firms which sell on the national market only. These...

This paper presents the first empirical test with German establishment level data of a hypothesis derived by Helpman, Melitz and Yeaple in a model that explains the decision of heterogeneous firms to serve foreign markets either trough exports or foreign direct investment: only the more...

This paper presents the first nonparametric test whether German works councils go hand in hand with higher labor productivity or not. It distinguishes between establishments that are covered by collective bargaining or not. Results from a Kolmogorov-Smirnov test for first order stochastic...