The strengthening of the rules imposed on the Administration comes not only from texts. It is also the work of the administrative judge. This occurs when the judge creates a new rule or interprets an existing rule. But it also occurs when the judge augments his control over the actions of the Administration inasmuch as this strengthening of the control limits the freedom of the Administration by overseeing its action. Normative densification then appears, not through the intervention of an authority normally empowered to create legal norms (legislator, regulatory authority) but as a result of an authority that is supposed to apply existing law. This normative densification thus takes place in the opposite way to what is most often observed, since it comes from the bottom rather than the top.