Health care systems are under reform in many countries. This typically involves a shift towards more competition. But still, markets are highly regulated. This study analyzes competition and regulatory measures in four important fields using the modern tools of microeconomic theory and...

Exploiting the German 2008 tax reform we employ an event study design to assess the effects of local corporate taxes on stock prices. We match firms to the local tax rates at their respective headquarters and analyze the differential stock market responses to the reform decision. We find that...

We study the effectiveness of local borrowing regulations in maintaining fiscal sustainability and the effect of supervision over municipal budgeting on local debt using a panel on municipalities in Germany's most populous state of North Rhine-Westphalia from 2003 to 2011. The identification...

Das Projekt analysiert die Preiswirkungen der Mehrwertsteuersenkung im Juli 2020 sowie die der entsprechenden Anhebung im Januar 2021 im Rahmen des Konjunkturpakets der Bundesregierung im Zuge der Corona-Pandemie. Die Untersuchung basiert auf Scannerdaten der GfK, die Informationen über die...

Exploiting the German 2008 tax reform we employ an event study design to assess the effects of local corporate taxes on stock prices. We match firms to the local tax rates at their respective headquarters and analyze the differential stock market responses to the reform decision. We find that...

Das Projekt analysiert die Preiswirkungen der Mehrwertsteuersenkung im Juli 2020 sowie die der entsprechenden Anhebung im Januar 2021 im Rahmen des Konjunkturpakets der Bundesregierung im Zuge der Corona-Pandemie. Die Untersuchung basiert auf Scannerdaten der GfK, die Informationen über die...

While risk selection within the German public health insurance system has received considerable attention, risk selection between public and private health insurers has largely been ignored. This is surprising since - given the institutional structure - risk selection between systems is likely...

We analyze the deficits of the German Länder for the period from 1960 to 2000 and test a number of hypotheses derived from the literature on the political economy of public expenditures and public deficits. Estimating a dynamic panel data model, we find evidence for political opportunism of the...

Seit 1996 können die Versicherten in der gesetzlichen Krankenversicherung Deutschlands (GKV) ihre Krankenkasse frei wählen. Der Wettbewerb zwischen den Kassenwurde damit erheblich verstärkt. Wegen des Verbots risikoabhängiger Prämien (Diskriminierungsverbot) haben die Krankenkassen einen...