How many immigrants with less than university education, for a given immigration quota, maximise economic output? The answer is zero in the canonical model of the labour market, where the marginal product of a university-educated immigrant is always higher. We build an alternative model in which...

A unique survey which tracks worldwide the best and brightest academic performers from three Pacific countries is used to assess the extent of emigration and return migration among the very highly skilled, and to analyze, at the microeconomic level, the determinants of these migration choices....

Job search procedures are a form of human capital investment in that they involve current investments to enhance future returns, analogous to human capital investments in areas such as education, training and mobility that yield future returns. While the theoretical and empirical literature on...

There is wide concern that migration flows may undermine the financial viability of generous welfare arrangements. The discussion focuses on welfare arrangements as attractors of migrants, suggesting that the issue does not pertain to migrant workers. However, this overlooks how welfare...

Among all European countries, Germany absorbs by far the largest number of immigrants. But to date, the German government has yet to adopt a system that will effectively control the influx of foreigners. The immigration of Ethnic Germans from Eastern Europe, which is due to historical events and...

This paper contributes to the literature on the Covid-19 effects on workers and labor markets by focusing on the experience of migrant key workers in EU countries. Our analysis, based on survey data on more than 3 million workers, explores three main aspects. First, we document the...

How immigration affects the labor market of the host country is a topic of major concern for many immigrant-receiving nations. Spain is no exception following the rapid increase in immigrant flows experienced over the past decade. We assess the impact of immigration on Spanish natives' income by...

Mobility of workers involves flows of labour, human capital and other production factors and thus contributes to a more efficient allocation of resources. Besides these effects on allocative efficiency, migrant flows affect relative wages and also change the international and national...

This paper uses survey data on employment immigrants in Australia and the United States to identify the main determinants of the size and skill composition of employment immigrants to developed countries. Our approach emphasizes the key roles of world prices of skills and country proximity. Our...

This paper provides an introduction and overview of my research on the Economics of Language. The approach is that language skills among immigrants and native-born linguistic minorities are a form of human capital. There are costs and benefits associated with this characteristic embodied in the...