Saint-Jean-Eudes is a neighbourhood located between the Chicoutimi and Jonquière district limits in he city of Saguenay. Situated between the Rio Tinto plant and the Saguenay River, it has undergone many changes in recent years. Since it is one of the last neighbourhoods in the city of Saguenay to have preserved the characteristics of a working-class sector until the 2000s, it is a case of interest for studying and understanding the transformations of a working-class neighbourhood. This text presents the results of qualitative research carried out in urban sociology. The study allows us to observe how the social and economic changes that have occurred in recent decades have modified social relations in this urban area and have transformed the lifestyles of the inhabitants as well as their perceptions of the industrial environment of the neighbourhood.