Le portage d'une politique de diversité en entreprise comme processus de changement : enjeux stratégiques et dynamiques socio-organisationnelles

The present thesis addresses - cross-cutting the fields of organization sociology, strategic management and human resources - the motivation-stakes, the strategic challenges and the phenomenology inherent to the conduction of a diversity policy in the companies. The innovative nature of a diversity policy is evaluated vs. several criteria, such as the co-existence of discursive, normative and operation-oriented dimensions, the existence of a socio-organisational dynamics leading to a managerial training-learning process and the inscription of the diversity-driven change in a curling- expansion mode of progress.Accordingly, the thesis adopts an open-minded heuristically-based approach (which combines and profits from induction and deduction), uses diverse and diversified sources (four exploratory investigations, a case-study addressing the diversity policy of the La Poste group from the beginnings of 2006 to the end of 2012) and relies upon numerous investigations.