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...

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...

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...