The scrutiny of the close connection between expert appraisement and judicial review should be especially fruitful if it takes place on the borderline usually drawn between such different legal fields as labour law and economic law. The purpose of the paper is to consider how and why this connection takes different forms about the same topic : the "interest of the enterprise", following the field in wich it arises. The legal system as such doesn't answer it. It is therefore suggested that one relevant element has to be found in the neo-corporatist government of collective interests which contributes to externalize the expert appraisement out of the judicial review. However, one has to find new ways to reinforce the concept of control in the...