As its title indicates, this article attempts to summarize the most important work on social classes in Quebecois sociology during the last 50 years. Social class research in Quebec has been associated with various theoretical approaches (Weberian, Parsonian, Marxist, Gurvitchian, Tourainian, etc.) which have taken either parallel or conflicting paths with each other. At the same time, the sociology of classes has been associated with many successive political conjunctures, each of which has been marked by the national question. These scientific debates illustrates the most important stakes involved in these conjunctures, especially with regard to social change and avant-garde social groups.
