Case C-177/18: Judgment of the Court (Second Chamber) of 22 January 2020 (request for a preliminary ruling from the Juzgado de lo Contencioso-Administrativo No 14 de Madrid — Spain) — Almudena Baldonedo Martín v Ayuntamiento de Madrid (Reference for a preliminary ruling — Social policy — Directive 1999/70/EC — Framework agreement on fixed-term work concluded by ETUC, UNICE and CEEP — Clause 4 — Principle of non-discrimination — Clause 5 — Measures to prevent abuse arising from the use of successive fixed-term employment contracts or relationships — Compensation if the employment relationship is terminated — Articles 151 and 153 TFEU — Articles 20 and 21 of the Charter of Fundamental Rights of the European Union — Applicability — Difference of treatment based on whether a public or private regime, within the meaning of national law, governs the employment relationship)