Judgment of the Court (Grand Chamber) of 8 December 2020.#Hungary v European Parliament and Council of the European Union.#Action for annulment – Directive (EU) 2018/957 – Freedom to provide services – Posting of workers – Terms and conditions of employment – Remuneration – Duration of posting – Determination of the legal basis – Articles 53 and 62 TFEU – Amendment of an existing directive – Article 9 TFEU – Misuse of powers – Principle of non-discrimination – Necessity – Principle of proportionality – Extent of the principle of freedom to provide services – Road transport – Article 58 TFEU – Regulation (EC) No 593/2008 – Scope – Principles of legal certainty and legislative clarity.#Case C-620/18.