When immigrants arrive in a new country, they are confronted with new labour market requirements such as language proficiency, familiarity with job search procedures and work practices which they are not always able to satisfy. These obstacles affect not only new immigrants, but, surprisingly, their children too, even if the children are born and educated in the receiving country. This publication presents reviews of the labour market integration of immigrants and their children in four OECD countries (Belgium, France, the Netherlands and Portugal), and provides country-specific recommendations. Governments have a role to play in promoting language and vocational training, and encouraging diversity in the workplace. Immigrants themselves must accept the requirements of the host country employers. The viability of future migration policies, in particular greater recourse to immigration, will depend to a large extent on how successful OECD countries and immigrants are in achieving these objectives.