The rapid growth in the foreign-born population in many high and middle-income countries in the past decades has prompted much research on the socio-economic impacts of immigration. The migration issue has become one of the most debated subjects in many developed countries. Since the early...

The number of immigrants across the world has doubled since 1980. The estimates of the impact of immigration on wages and employment in host countries are quantitatively small but vary widely. We use meta-regression analysis to show how the estimates vary with definitions of the labor market,...