Court of Justice (Third Chamber) 18 December 2019, C-447/18 (UB v Generálny riaditeľ Sociálnej poisťovne Bratislava.)

JUDGMENT OF THE COURT (Third Chamber) 18 December 2019 ( *1 ) (Reference for a preliminary ruling — Social security — Coordination of social security systems — Regulation (EC) No 883/2004 — Article 3 — Matters covered — Old-age benefit — Freedom of movement for workers within the European Union — Regulation (EU) No 492/2011 — Article 7 — Equal treatment of national workers and migrant workers —