Tacit collusion reduces welfare comparably to explicit collusion but remains mostly unaddressed by antitrust enforcement which greatly depends on evidence of explicit communication. We propose to target specific elements of firms' behavior that facilitate tacit collusion by providing...

Alternative market structures are distinguishable by the degree of parallel action exhibited by producers. We show that the correlation between output levels varies systematically with the degree of interdependence among firms, and establish an ordering among alternative behavioral hypotheses...

In this paper, we tackle the dilemma of pruning versus proliferation in a vertically differentiated oligopoly under the assumption that some firms collude and control both the range of variants for sale and their corresponding prices, likewise a multiproduct firm. We analyse whether pruning...

Die starken Preissteigerungen für Benzin in den letzten 2 Jahren sind häufig auf mangelnden Wettbewerb zurückgeführt worden. Die These wird überprüft, indem die Wettbewerbsstruktur bei Tankstellen und deren Vorleistungsbeziehungen dargestellt werden und ökonometrische Schätzungen über...

This paper aims at highlighting the Commission's approach towards the relation between sector specific regulation and general competition law, especially concerning energy markets and the road to Internal Market objective.We firstly present Trinko case, in order to focus on two crucial and...

Industry-wide voluntary agreements are touted as a means for corporations to take more corporate social responsibility (CSR). We study what type of joint CSR agreement induces firms to increase CSR efforts in a model of oligopolistic competition with differentiated products. Consumers have a...