After analysing the meaning of the expression "remedial activity" with reference to the work of the authorities, the essay indicates a possible generalization of the provisions introduced by the latter in response to the concrete needs of the various sectors in which they operate. Examination of these provisions seems to show that they relate to administrative power. It follows that the authorities are also subject to the principles and controls of administrative power. The author argues that in order to guarantee the independence of these bodies, it is essential that the provisions of the authorities should be subject to judicial control. However, although the option of exclusive jurisdiction which predominates in trade-union debate on the provisions of the authorities resolves numerous issues of competence, it leaves problems to do with the limits of judicial unionization unsolved.