Since ethnic clustering is common in Germany, a better understanding of its effects on the integration of immigrants could be important for integration policies, especially in the light of rising immigration and a skilled worker shortage. Yet, both economic theory and empirical research for...

Ethnic groups tend to agglomerate and assemble, mostly in urban areas. While ethnic clustering is critically debated in societies and the consequences for economic outcomes are under debate in research, the process is not yet well understood. A separate literature has also examined the cultural...

Even though ethnic clustering is common, both economic theory and empirical research have not been able to provide a clear-cut answer on its effects on the integration of immigrants. In this paper, we study the effect of residential clustering on the labour market outcome of immigrants in...

We analyze how an entry regulation that imposes a mandatory educational standard affects entry into self-employment and occupational mobility. We exploit the German reunification as a natural experiment and identify regulatory effects by comparing differences between regulated occupations and...

Many countries support business start-ups to spur economic growth and reduce unemployment with different programmes. Evaluation studies of such programmes commonly rely on the conditional independence assumption (CIA), allowing a causal interpretation of the results only if all relevant...

We explore the role of different types of self-employment for a persistence of the regional level of entrepreneurship over time. Our analysis for West German regions shows relatively strong effects for the historical self- employment rate in the non-agricultural sector, particularly in...

Education is a well-known driver of (entrepreneurial) income. The measurement of its influence, however, suffers from endogeneity suspicion. For instance, ability and occupational choice are mentioned as driving both the level of (entrepreneurial) income and of education. Using instrumental...