The Economic Effects of International Migration is a collection of the fundamental articles written by Giovanni Peri on the economic determinants and consequences of international migration. These papers have provided the theoretical framework and empirical analysis for a rethinking of the economics of migration, going beyond the Canonical model of labor demand and supply used until the 1990s. Beginning with a simple model that recognizes the differences between immigrants and natives as workers, the articles develop the analysis of complementarity, specialization and productivity effect of immigrants in developed economies. The book then presents a series of papers analyzing and testing the economic motivation for international migration. Finally, the focus is shifted to the effect of immigration policies and their consequences on immigration and the economy.