"Undocumented international migration is an increasingly important political, social and economic issue. The articles collected in this volume provide a framework for the study of some key decisions that potential migrants are confronted with when considering a move abroad. This includes the...

Expectations are running high for significant outcomes on the temporary movement of natural persons to supply services - known as mode 4 - in the current WTO services negotiations. Powerful drivers for liberalisation exist, such as increased trade and investment, strengthened global business...

Migration waves in Europe in the past century had diverse causes but currently prevailing purposes for migration are of economic origin. International labour migration is mainly promoted by economic interests. This paper puts together important facts regarding motivation to labour migration and...

Immigration in the United States is characterized by a number of empirical regularities. Immigrants cluster geographically and are often employed together. Immigrant earnings differ by origin, even after controlling for education and experience. A large fraction of immigrants eventually returns...