Camille Peugny is a sociologist, an assistant professor at Paris‑8 University, and a researcher within the CSU laboratory (Cultures et Sociétés Urbaines – Urban Cultures and Societies), a component of the CRESPPA mixed research unit (Centre de Recherches Sociologiques et Politiques de Paris – Paris Centre for Sociological and Political Research; UMR CNRS 7217). His works seek to analyse social stratification and inequalities. In particular, he has published two books on social mobility: Le Déclassement (Grasset, 2009) and Le Destin au berceau. Inégalités et reproduction sociale (Seuil, 2013). His recent research focuses on the transformation of the working classes, and on the social and personal services sector.