In the age of globalization, the importance of migration for the industrialized countries has increased. Inflows of migrants have steadily risen in the 1980s and the early 1990s. Yet while the public debate about policy responses to these developments continues unabated, research findings of economists are often ignored. In this four-volume collection the editors have selected some of the most significant contributions on the economics of migration, which provide an overview of the present state of empirical migration research. Topics covered include the migration decision, the integration of immigrants into the labor market and society, their economic behavior, empirical and theoretical contributions to migration policy, and the effects of immigrants on the native population.