Research carried out in recent decades on the experiences of migrants in Western countries recognizes the complexity and multidimensionality of adaptive and integrative processes associated with the difficulties of living in a new sociocultural context.Following an overview of the distinctive characteristics of different migrant generations, we present a brief review of studies that connect social participation with integration and multiculturalism. In this chapter we define social participation as the process by which individuals are "actively participating in the life of their communities" by joining associations and volunteering (Harvard School of Public Health/ MetLife Foundation, 2004;Pozzi, Pistoni, & Alfieri, 2017). We then describe the results of a qualitative study that explored what integration meant for a group of young engaged migrants, how integrated they felt, and what role participation in associations, both national and ethnic, played in these young people's perception of integration. Next, we discuss our results, connecting them with the principal results found in the literature. We conclude with the implications of our research findings.A large number of factors have been proposed as being associated with the adaptation and integration of different migrant generations. For the first generations these factors include sociodemographic variables (e.g., gender, age, length of stay in the host country, socioeconomic status), post-migration variables (e.g., acculturation factors), and social contextual variables (e.g., characteristics of the host country, perceived discrimination, social support, ethnic network) (Berry, 1997;