Case C-760/18: Judgment of the Court (Seventh Chamber) of 11 February 2021 (request for a preliminary ruling from the Monomeles Protodikeio Lasithiou — Greece) — M.V. and Others v Organismos Topikis Aftodioikisis (OTA) ‘Dimos Agiou Nikolaou’ (Reference for a preliminary ruling — Social policy — Directive 1999/70/EC — Framework agreement on fixed-term employment concluded by ETUC, UNICE and CEEP — Clause 5 — Measures to prevent abuse arising from the use of successive fixed-term employment contracts or relationships — Fixed-term employment contracts in the public sector — Successive contracts or extended initial contract — Equivalent legal measure — Absolute constitutional prohibition on conversion of fixed-term employment contracts to contracts of indefinite duration — Obligation to interpret in conformity with EU law)