Les Etats-Unis et le Canada sont confrontés au problème de l’immigration illégale. Pour endiguer le phénomène clandestin, les deux Etats ont recours à la régularisation des sans-papiers sur leur territoire en 1973 [Programme de Rectification du Statut, au Canada] et 1986 [Immigration Reform and Control Act aux Etats-Unis d’Amérique]. Quelle est la portée de la politique de régularisation et les enjeux de l’immigration aux Etats-Unis et au Canada ? / The United States of America [Immigration Reform and Control Act, 1986] and Canada [Adjustment of Status Program, 1973] resorted to amnesty in order to curb the growing complexities of illegal immigration. What was the impact of the legalization program, and the stakes relating to immigration in the United States and Canada ?

The topic of the thesis is Multiculturalism of the companies in the European Union as one of the approach of managing cultural diversity. The aim of the thesis is to provide an overview on different approaches to this topic based on different materials already published as well as on good practices used in the companies. The main question of the thesis is: DO the companies on the EU market go toward the model of multicultural organization? The thesis contains of four parts. The first one explains most important terms which are multiculturalism, diversity and diversity management. It also summarizes the brief history of diversity management as well as the importance of managing diversity. It explains also the factors creating the interest of cultural diversity and its management. The second part explains the perspective of the EU. It elaborates recent demographic changes as one of the external factors influencing the attitude toward managing diversity. It explains also the Immigration Policy of the EU in more details. EU legislation focusing on discrimination and equal opportunities is also part of this chapter. The third chapter focuses on diversity from the organizations point of view. It explains the Cox model as one of the theories of dividing companies based on their approach to cultural diversity. It also describes the main techniques used for the transition to multicultural company. The part of this chapter focuses also on multicultural teams and their performance. The last chapter of the thesis describes good practices in managing cultural diversity of the companies on the EU market and the particular tips created by EU to help small and medium enterprises to manager diversity.