The principle of evaluation seems to have become an organization norm in the social intervention sector. From a critical and reflective approach based on a case study in the socio-professional integration sector, we question the new forms of rationality that produce this normalization by the “inseparable couple” which is the evaluation-indicator. The effects are felt in the construction of public policies on work organization and social intervention services. A third level of analysis, often forgotten, may be raised. That of the impact of social arrangements on users and the workers themselves.