This article aims at analyzing the efforts made by the workers of Berisso (Argentina) to develop their self-organization and discipline as well as promote their associative experiences through the XXth century. Ethnic and national associations formed by transatlantic immigrants intertwine with associations built by internal migrants in a complex process that connect different kind of identities, where work, migration, culture, politics, gender and social background combine and juxtapose. In the local historical process, actors developed social and associative practices that contributed to the formation of different identities (ethnic, working class) and the definition of several rights (to education, to better urban living conditions, to health, to recreation) through the use of notions as community, difference and identity.
