International audienceAvailable online : http://www.cairn.info/revue-francaise-de-socio-economie-2015-2-page-171.htm This paper builds on the idea that some norms deserve more than others to be said incentives. Unlike legal scholarship and economists who tend to hold every single legal norm as being an incentive, the paper narrows the scope of what constitutes an incentive. It then analyzes the consequences of the pervasiveness of that kind of norms in labour law. The conception of what an employer does, as well as the individual-collective nexus in labour settings, are found to be affected.Accessible en ligne : http://www.cairn.info/revue-francaise-de-socio-economie-2015-2-page-171.htm Certaines normes, plus que d’autres, méritent d’êt...