Judgment of the Court (Third Chamber) of 15 April 2021.#AB v Olympiako Athlitiko Kentro Athinon – Spyros Louis.#Request for a preliminary ruling from the Areios Pagos.#Reference for a preliminary ruling – Social policy – Directive 2000/78/EC – Principle of equal treatment in employment and occupation – Prohibition of discrimination on grounds of age – Workers placed under a labour reserve system until termination of their contract of employment – Wage reduction and reduction or loss of severance pay – System applicable to public-sector workers close to full-time retirement – Reduction of public-sector wage costs – Article 6(1) – Legitimate social policy objective – Economic crisis.#Case C-511/19.