This paper analyzes how firms respond to changes in tax benefits for low-earning workers and how, through equilibrium effects, such policies also affect non-targeted, high-earning workers. I explore establishment-level outcomes around Germany's 2003 Mini-Job Reform, which entailed a significant...

Drawing on panel data on daily fuel prices covering over 5,000 filling stations in Germany, this paper documents a change in the stations' price setting behavior following the introduction of a legally mandated online price portal in 2013. Prior to the portal, positive asymmetry is found on the...

Market delineation is a fundamental tool in modern antitrust analysis. However, the definition of relevant markets can be very difficult in practice. This preliminary draft applies a new methodology combining a simple price correlation test with hierarchical clustering -a method known from...

We provide an empirical assessment of the German interurban bus industry two years after its deregulation in January 2013. In addition to a general description of key developments of the industry, we use a unique route-level price data set to study both competitive interaction in general and the...