The publication is the result of a major new research project of the International Organisation for Migration (IOM). The project was managed by IOM Vienna and funded by the European Commissionu0092s Directorate for Employment and Social Affairs. It analyses migration trends in six EU accession countries: Bulgaria, the Czech Republic, Poland, Romania, Slovakia and Slovenia. It examines the effects of EU enlargement on migratory routes and destinations, as well as social changes in new member states. It provides answers to the questions of how new migration trends will affect society in these countries, how countries characterised by emigration in the 1990s will cope with rising immigration and the challenge of integrating migrants. It also deals with the issue of how governments are planning to cope and what is expected after May 2004.