Case C-17/19: Judgment of the Court (Fifth Chamber) of 14 May 2020 (request for a preliminary ruling from the Cour de cassation — France) — Criminal proceedings against Bouygues travaux publics, Elco construct Bucarest, Welbond armatures (Reference for a preliminary ruling — Migrant workers — Social security — Regulation (EEC) No 1408/71 — Legislation applicable — Article 14(1)(a) and (2)(b) — Regulation (EC) No 883/2004 — Article 12(1) — Article 13(1)(a) — Posted workers — Workers employed in two or more Member States — Regulation (EEC) No 574/72 — Article 11(1)(a) — Article 12a(2)(a) and(4)(a) — Regulation (EC) No 987/2009 — Article 19(2) — E 101 and A 1 Certificates — Binding effect — Consequences — Social security — Employment law)