Résumé
The sociological and demographic reality of recent decades has meant that western companies have seen an evolution towards greater diversification among their staff members. The implementing of a diversity policy in a company cannot be reduced to a managerial fashion or fad, to professional rhetoric or to a set of superficial or illusory initiatives, but it can aim at social transformation. That is why, in this chapter, the authors have chosen to portray the deployment of such an approach from the standpoint of an organisation-changing process, which can, at the same time, alter the language, the standards and the practices of the organisation and led them at the end to identify three managerial levers capable of transforming team diversity into performance enhancers.