By analyzing a unique dataset from Germany’s evaluation of COVID-19 antigen rapid tests, we show that Chinese firms can excel under today’s global competition and produce tests at quality levels higher than China’s income level would suggest. We find these achievements are positively...

In the context of energy security and climate protection, biomass is given high importance. Nevertheless, land-use conflicts resulting from the cultivation of biomass and their economy-wide effects are yet to be fully understood. To shed light on this issue we link three distinctive models; a...

In this paper we make use of a unique dataset collected in the central train station of Kiel, Germany. A group ticket is used by individual proposers who search for co-travelers to share the ride with shortly before the train departure. The bargaining behavior resembles the Ultimatum game to the...

This paper analyzes the role of the extensive vis-à-vis the intensive margin of labor adjustment in Germany and in the United States. The contribution is twofold. First, we provide an update of older U.S. studies and confirm the view that the extensive margin (i.e., the adjustment in the number...

Subsidies granted by the German federal government decreased in the 1998–2004 period. Since 2005, subsidies have increased. The transfers to the compulsory health insurance system were raised by very large amounts. Moreover, the subsidies for re-integrating the unemployed were raised. The...

Tax expenditures are granted for a variety of purposes in Germany. The paper presents data on the extent and the structure of the tax expenditures in the period 2003 to 2010. Tax expenditures were reduced somewhat in the period 2003–2006. However, they increased again thereafter. --...

This paper sheds light on how changes in the organization of work lead to wage inequality. We present a theoretical model in which workers with a wider span of competence (higher level of multitasking) earn a wage premium. Since abilities and opportunities to expand the span of competence are...

This paper is based on my thesis from the year 2008. It uses the German Microcensus (MC) to study the effects of continuing vocational training (CVT) on employment, the risk of unemployment, and wages. To control for education, profession and heterogeneity in the sectors and industrial branches...