Using the Swiss Households Panel data, this study draws a general picture of the ways of life and professional integration of communities defined, according to the country of origin (nationality of the parents at birth) and the current nationality. It shows the difficulties of being integrated in a structural point of view among the various communities, in particular among those coming from some regions of Europa (non-EC countries and Southern Europe). These difficulties can certainly be linked with the level of education, but also with discriminatory practices, which lead to an increased rate of unemployment among the foreign communities. The disparities between the Swiss population and the one of foreign origin are maintained after naturalization : the group of Swiss people whose parents were of foreign nationality at birth also present a higher risk of unemployment, comparatively with persons of Swiss origin.