41Further, where a legislative act has already coordinated the legislation of the Member States in a given EU policy area, the EU legislature cannot be denied the possibility of adapting that act to any change in circumstances or advances in knowledge, having regard to its task of safeguarding the general interests recognised by the FEU Treaty and of taking into account the overarching objectives of the European Union laid down in Article 9 of that Treaty, including the requirements pertaining to the promotion of a high level of employment and the guarantee of adequate social protection (see, to that effect, judgment of 21 December 2016, AGET Iraklis, C‑201/15, EU:C:2016:972, paragraph 78).
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