This paper analyzes how enforcement along the U.S.-Mexican border has affected the market for migrant smugglers. Using a unique dataset that links border crossing histories from illegal Mexican migrants to aggregate enforcement and punishment statistics, we find that the effect of enforcement on...

Using a new dataset of Swiss cantons from 1890 to 2000, we estimate the causal effect of direct democracy on government spending. Our analysis is novel in two ways: first, we use fixed effects to control for unobserved heterogeneity; second, we combine a new instrument with fixed effects to...

Using a new data set on Swiss state and local governments from 1890 to today, we analyze how the adoption of proportional representation affects fiscal policy. We show that proportional systems shift spending toward broad goods (e.g. education and welfare benefits) but decrease spending on...

Previous studies assume that labor market skills are either fully general or specific to the firm. This paper uses patterns in mobility and wages to analyze how portable specific skills are in the labor market. The empirical analysis combines data on tasks performed in different jobs with a...

This paper studies how portable skill accumulated in the labor market are. Using rich data on tasks performed in occupations, we propose the concept of task-specific human capital to measure the transferability of skills empirically. Our results on occupational mobility and wages show that labor...

Immigrants in many countries have lower employment rates and lower earnings than natives. In this paper, we ask whether a more liberal access to citizenship can improve the economic integration of immigrants. Our analysis relies on two major immigration reforms in Germany, a country with a...

Immigrants in many countries have lower employment rates and lower earnings than natives. We study whether a more liberal access to citizenship improves the economic integration of immigrants. Our analysis relies on two major immigration reforms in Germany, a country with a weak record of...

Immigrants in many countries have lower employment rates and earnings than natives. We study whether the option to naturalize improves immigrant assimilation. The empirical analysis relies on two major immigration reforms in Germany, acountry with a weak record of immigrant integration. Using...

Seit 2008 kamen - vor allem aus der Europäischen Union - zunehmend mehr Einwanderer nach Deutschland als wegzogen. Motiviert waren diese nicht wie befürchtet durch die großzügigen Sozialleistungen, sondern durch die Aussicht auf Arbeit. Gleichzeitig mit der Struktur der Herkunftsländer hat...