This report on the economic impact of migration on Poland and the Baltic states, written by Pawel Kaczmarczyk and Marek Okolski, Centre of Migration Research, University of Warsaw, was prepared in conjunction with a project on labour mobility from the new EU member states to the Nordic countries that was commissioned to Fafo by the Nordic Council of Ministers. The report gives a general description of migration of the population of Poland and the Baltic States, and compare basic structural features of those movements in the pre-accession and post-accession period. The report also gives an analysis of the effects of remittance flows upon sending countries’ economies and households, and discuss various consequences that migration might have had on labour markets, both at national and regional level, and on home countries endowment with human capital.