This paper investigates empirically rm investment behavior in research and development (R&D). Firms make investments in R&D in order to produce innovations. These innovations in turn improve the rm s future productivity level, pro tability and incentives to invest in R&D. Using German rm-level...

This paper looks at the e ffect of cultural barriers on the skill selection of international migration. The data covers bilateral migration stocks by skill level in 2000 from about 99 sending countries to the main 15 destination countries. We use genetic distance as a proxy for cultural distance...

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...

Survey data for a large sample of recent graduates from 37 German universities are used to study labor market outcomes of highly skilled young women and immigrants. Our results indicate a systemic wage gap for women, but not for male immigrants. We find no evidence that female immigrants suffer...

Ever since Sjaastad (1962), researchers have struggled to quantify the psychic cost of migration. We monetize psychic cost as the wage premium for moving to a culturally different location. We combine administrative social security panel data with a proxy for cultural difference based on unique...

This paper investigates the role that pre-immigration skills play in immigrants job-finding processes in Germany. We first show theoretically that the job-finding rate for the high-skilled varies depending on their search strategy: if they are prepared to look for both unskilled as well as...

This paper examines the determinants of gross labour flows in a context where modeling the migration decision as a wage-maximizing process may be inadequate due to regional wage rigidities that result from central wage bargaining. In such a context, the framework that has been developed by...

This paper investigates immigrants and natives labour supply to the firm within a semi-structural approach based on a dynamic monopsony framework. Applying duration models to a large administrative employer employee data set for Germany, we find that once accounting for unobserved worker...

It is difficult to estimate the impact of geographic clustering on productivity because of endogeneity issues. I use birthplace-cluster distance as an instrumental variable for the incidence of clustering of prominent classical composers born between 1750 and 1899. I find that geographic...

This paper uses panel data from the German Socio-Economic Panel (SOEP) to analyze welfare entry and exit among natives and immigrants after a substantial reform of the welfare system (``Hartz reform''). Using results from dynamic multinomial logit models, we calculate transition matrices between...