Case C-265/20: Judgment of the Court (Seventh Chamber) of 5 May 2022 (request for a preliminary ruling from the Hof van beroep te Antwerpen — Belgium) — FN v Universiteit Antwerpen and Others (Reference for a preliminary ruling — Social policy — Part-time work — Directive 97/81/EC — Framework Agreement on part-time work concluded by UNICE, CEEP and the ETUC — Clause 4.1 — Principle of non-discrimination — Part-time academic staff — Automatic permanent appointments reserved for academic staff members holding a full-time teaching post — Calculation of the percentage of a full-time workload to which a part-time workload corresponds — No requirements)