Eine neue Studie untersucht, ob Nebeneinkünfte die politische Tätigkeit von Bundestagsabgeordneten beeinträchtigen. Die Ergebnisse zeigen nicht, dass Nebeneinkünfte mit der Abwesenheit in namentlichen Abstimmungen und der Zahl der Reden im Parlament korrelieren. Es gibt jedoch eine negative...

Signature requirements are often used as hurdles to prevent overuse of public referenda. We evaluate the causal effect of lowering signature requirements on the number of observed citizen initiatives. Based on municipality-level data for Germany, we make use of legislative changes at specific...

We examine moonlighting by politicians in Germany. In July 2007, the German Supreme Court adjudicated that members of parliament (MPs) have to publish details of their outside earnings. Using panel data models, we investigate how outside earnings are correlated with absence and parliamentary...

Recently, the channels of citizen participation in Germany with regard to governmental processes are subject to change. Classical interaction between politicians and citizens still takes place. However, there are new tools for participation at hand as well. One interesting channel that attracted...

In this short note, we use data from different elections in the German state of North-Rhine Westphalia between 1975 and 2010 to show that the social democrats generally profit from higher voter turnout at the expense of the conservatives. We deal with the endogeneity of voter turnout by using...

This thesis comprises four empirical research papers in the area of political economics. While the first two chapters deal with questions related to direct democracy, chapters three and four are about topics linked to representative democracy.

We examine moonlighting by politicians in Germany. In July 2007, the German Supreme Court adjudicated that members of parliament (MPs) have to publish details of their outside earnings. Using panel data models, we investigate how outside earnings are correlated with absence and parliamentary...

It is a longstanding debate whether members of parliament (MPs) should be allowed to follow sideline jobs in addition to their mandate. Critics claim that politicians already face binding time constraints and that moonlighting might lead to a neglect of inner-parliamentary duties. The purpose of...