The result of the research project "In Search of Labour Market Security. Migration to and from Poland and the Attractiveness of the Polish Labour Market," this book consists of five essays that consider why people migrate. Contributors working in migration research, psychology, political science and international studies, and sociology in Poland explore whether or not labor market security is a factor behind migrants' decisions to leave their country of origin and whether or not it impacts the choice of destination countries. They draw on interviews with migration specialists, a social survey (Paper and Pen Personal Interview), and qualitative interviews with Polish and Ukrainian labor migrants employed in the UK, Germany, and Poland. They describe theoretical and methodological assumptions in the project; labor markets in Poland, the UK, Germany, and Ukraine, with a focus on labor market security; the attitudes of Poles working in Germany and the UK in terms of labor market security; and the shaping of migration policies in specific countries.