Judgment_paragraph 50 · Terveys- ja sosiaalialan neuvottelujärjestö (TSN) ry v Hyvinvointialan liitto ry and Auto- ja Kuljetusalan Työntekijäliitto AKT ry v Satamaoperaattorit ry (C-609/17, C-610/17)

50Therefore, the situations at issue in the main proceedings are different from the situation in which an act of the Union gives the Member States the freedom to choose between various methods of implementation or grants them a margin of discretion which is an integral part of the regime established by that act, and from the situation in which such an act authorises the adoption, by the Member States, of specific measures intended to contribute to the achievement of the objective of that act (see, in those various respects, judgments of 21 December 2011, N.S. and Others, C‑411/10 and C‑493/10, EU:C:2011:865, paragraphs 64 to 68; of 16 February 2017, C. K. and Others, C‑578/16 PPU, EU:C:2017:127, paragraph 53; of 9 March 2017, Milkova, C‑406/15, EU:C:2017:198, paragraphs 46, 47, 52 and 53 and the case-law cited; and of 13 June 2017, Florescu and Others, C‑258/14, EU:C:2017:448, paragraph 48).