The Roy-Borjas model predicts that international migrants are less educated than nonmigrants because the returns to education are generally higher in developing (migrant-sending) than in developed (migrant-receiving) countries. However, empirical evidence often shows the opposite. Using the case of Mexico-U.S. migration, we show that this inconsistency between predictions and empirical evidence can be resolved when the human capital of migrants is assessed using a two-dimensional measure of occupational skills rather than by educational attainment. Thus, focusing on a single skill dimension when investigating migrant selection can lead to misleading conclusions about the underlying economic incentives and behavioral models of migration.

Ein Großteil der Jugendlichen in Deutschland beginnt nach der Schule eine duale Berufsausbildung. Die Inhalte dieser Berufsausbildungen und die dort vermittelten Kompetenzen sind bundesweit einheitlich in Ausbildungsplänen geregelt. Wir erfassen insgesamt mehr als 13 000 verschiedene Kompetenzen aus diesen Ausbildungsplänen, sowie deren genaue Lerndauer. Vor allem kognitive, soziale und digitale Kompetenzen, die während der Ausbildung erworben wurden, zahlen sich auf dem Arbeitsmarkt aus. Dabei steigen die Einkommenserträge höherer Kompetenzen über die Karriere hinweg an. Das zeigt unsere Analyse der Ausbildungsplandaten kombiniert mit administrativen Lohndaten des Instituts für Arbeitsmarkt- und Berufsforschung (IAB) über einen Zeitraum von insgesamt 30 Jahren. Außerdem dokumentieren wir steigende Erträge von digitalen und sozialen Kompetenzen seit den 1990er Jahren, während die Erträge von kognitiven Kompetenzen nur geringfügig zugenommen haben.

Establishment closures have lasting negative consequences for the workers they displace from their jobs. We study how these consequences vary with the amount of skill mismatch that workers experience after job displacement. Developing new measures of occupational skill redundancy and skill shortage, we analyze the work histories of individuals in Germany between 1975 and 2010. We estimate differencein- differences models, using a sample of displaced workers who are matched to statistically similar non-displaced workers. We find that displacements increase the probability of occupational change eleven-fold. Moreover, the magnitude of postdisplacement earnings losses strongly depends on the type of skill mismatch that workers experience in such job switches. Whereas skill shortages are associated with relatively quick returns to the counterfactual earnings trajectories that displaced workers would have experienced absent displacement, skill redundancy sets displaced workers on paths with permanently lower earnings. We show that these differences can be attributed to differences in mismatch after displacement, and not to intrinsic differences between workers making different post-displacement career choices.

This study investigates discrimination against women when searching and applying for childcare in a nationwide field experiment. We send emails from fictitious parents to 9,313 childcare centers in Germany inquiring about access to childcare. We randomize whether the email is sent by the child's mother or father. Our results show that women receive shorter and less positive responses than men. The probability of receiving a response does not differ by gender, highlighting the importance of going beyond response rates to detect discrimination. We provide suggestive evidence that regional differences in gender discrimination are related to gender norms.