 Worker centers and unions. The role of popular education in the organization of immigrants workers in temp agencies 
Popular education and “engaged research” as mechanisms of knowledge production are not new strategies for social and labour movements. Their importance is often overlooked and undervalued in sociology, and in the political theories of social movements. In this paper, I emphasize the importance of addressing popular education and knowledge production as fundamental to the mobilization and construction of working-poors movements and as a starting point for a critical analysis of the defensive position of trade unions and their organizational structures. The article aims to demonstrate that popular education and knowledge production are part of the social action of precarious workers and thus part of the field of analysis of the political economy of labour. To do this, I use the organizing experience of the Association des travailleurs et travailleuses d’agence de placement (ATTAP) de Montréal within the Centre des travailleurs et travailleuses immigrants (CTI) and its collaboration with the CSN (Confédération des syndicats nationaux) from 2013 to 2017.