38It is clear from the Court’s case-law that, as regards permitted derogations provided for by Directive 2003/88, in particular in Article 17, as exceptions to the European Union system for the organisation of working time put in place by that directive, those derogations must be interpreted in such a way that their scope is limited to what is strictly necessary in order to safeguard the interests which those derogations enable to be protected (see, to that effect, judgment of 14 October 2010, Union syndicale Solidaires Isère, C‑428/09, EU:C:2010:612, paragraphs 39 and 40).