53In that regard, in the first place, it must be borne in mind that, as is clear from the very wording of Article 7(1) of Directive 2003/88, every worker is entitled to paid annual leave of at least four weeks. That right to paid annual leave must be regarded as a particularly important principle of EU social law, the implementation of which by the competent national authorities must be confined within the limits expressly laid down by Directive 2003/88 itself (judgment of 29 November 2017, King, C‑214/16, EU:C:2017:914, paragraph 32 and the case-law cited).
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