Case C-485/20: Judgment of the Court (Third Chamber) of 10 February 2022 (request for a preliminary ruling from the Conseil d’État — Belgium) — XXXX v HR Rail SA (Reference for a preliminary ruling — Social policy — Directive 2000/78/EC — Equal treatment in employment and occupation — Prohibition of discrimination on the ground of disability — Dismissal of a worker who had become permanently incapable of performing the essential functions of the post — Staff member completing training as part of recruitment — Article 5 — Reasonable accommodation for people with disabilities — Requirement to reassign to another post — Obligation subject to it not being a disproportionate burden for the employer)