Case C-550/19: Judgment of the Court (Seventh Chamber) of 24 June 2021 (request for a preliminary ruling from the Juzgado de lo Social No 14 de Madrid — Spain) — EV v Obras y Servicios Públicos SA, Acciona Agua SA (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 — Successive fixed-term employment contracts in the construction sector, known as ‘fijos de obra’ — Concept of ‘objective reasons’ justifying the renewal of such contracts — Directive 2001/23/EC — Article 1(1) — Transfer of an undertaking — Article 3(1) — Safeguarding of employees’ rights — Taking over of employment contracts in accordance with the terms of a collective agreement — Collective agreement limiting the rights and obligations of the transferred workers to the rights and obligations arising from the last contract concluded with the outgoing company)