Economic debate about the consequences of immigration in Germany has largely focused on the wage effects for natives at an aggregate level. Especially the role of imperfect substitutability of migrants and natives gained importance. A new topic is to focus on the firm level by estimating...

We build a dynamic model of migration where, in addition to classical mobility costs, workers face informational frictions that decrease their ability to compete for distant job opportunities. We structurally estimate the model on a matched employer-employee panel dataset describing labor market...

This paper investigates the effect of the size of the local labor market on skill mismatch. Using survey data for Germany, I find that workers in large cities are both less likely to be overqualified for their job and to work in a different field than the one they are trained for. Different...

In most industrialized countries, employment has grown predominately in jobs at the upper and lower tails of the wage distribution, while employment in the middle part of the distribution has stagnated or declined. This process of job polarization is well documented for a number of countries. We...

We analyse how institutional and political decisions are intertwined. Citizens who differ in their mobility and ability vote first on labour market integration and afterwards on education policy. The institutional decision on integration influences the succeeding education policy. More...

We argue that the narrative of variety-induced gains from trade in differentiated goods needs revision. If producing differentiated varieties of a good requires differentiated skills and if the work force is heterogeneous in these skills, then firms are likely to have monopsony power. We show...