Wetenschappelijke Raad voor het Regeringsbeleid 
Making Migration Work [PDF ebook] 
The Future of Labour Migration in the European Union

Largely because of the European Union’s two-phase expansion in 2004 and 2007, labor migration across the continent has changed significantly in recent years. Notably, the EU’s policy of open borders has enabled a growing stream of workers to leave new member states in search of higher wages. As a result, the nature, scale, and direction of migration flows have changed dramatically.
Making Migration Work explores how policy can—and should—address these changes. In the process, this timely volume considers the future trajectory of a phenomenon that has become an increasingly sensitive political issue in many European nations.