Seit Jahren verlangen internationale Institutionen eine Deregulierung des deutschen Arbeitsmarktes. Mit den HARTZ-Gesetzen hat sich die Politik in Deutschland nun in die richtige Richtung bewegt, nämlich hin zu mehr Flexibilität am Arbeitsmarkt. Man kann dabei nur hoffen, dass die aktuell...

Im zweiten Halbjahr 2021 lässt sich für Deutschland eine Übersterblichkeit nachweisen. Sachsen und Thüringen hatten eine massive Übersterblichkeit, während dies beispielsweise für Schleswig-Holstein und Berlin nicht der Fall war. Auf der Ebene der Bundesländer geht eine hohe Impfquote...

We investigate situations in which players make costly contributions as group mem- bers in a group conflict, and at the same time engage in contest with fellow group members to appropriate the possible reward. We introduce within group power asymmetry and complementarity in members' efforts and...

This paper analyzes selection biases in the project choice of complementary technologies that are used in combination to produce a final product. In the presence of complementary technologies, patents allow innovating firms to hold up rivals who succeed in developing other system components....

It is a widely adopted practice for firms to announce new products well in advance of actual market availability, especially in the computer industry. In this article, a firm makes pre-announcements on its product, which are "cheap talk." We develop a reputation model of "vaporware" where the...

This article develops a framework to analyze the incentives to form a patent pool or engage in cross-licensing arrangements in the presence of uncertainty about the validity and coverage of patents that makes disputes inevitable. It analyzes the private incentives to litigate and compares them...

This paper analyzes the effects of tying on market competition and social welfare in two-sided markets when economic agents can engage in multi-homing by participating in multiple platforms to reap maximal network benefits. The model shows that tying induces more consumers to multi-home and...