Case C-463/19: Judgment of the Court (First Chamber) of 18 November 2020 (request for a preliminary ruling from the Conseil de prud’hommes de Metz — France) — Syndicat CFTC du personnel de la Caisse primaire d’assurance maladie de la Moselle v Caisse primaire d’assurance maladie de la Moselle (Reference for a preliminary ruling — Social policy — Directive 2006/54/EC — Equal opportunities and equal treatment of men and women in employment and occupation — Articles 14 and 28 — National collective agreement granting the right to leave following the statutory maternity leave for female workers who bring up their children on their own — Exclusion of male workers from the right to that leave — Protection of female workers as regards both the consequences of pregnancy and the condition of maternity — Conditions under which applicable)