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...