C-356/15European Commission v Kingdom of Belgium

Domstolens egne nøkkelord

Failure of a Member State to fulfil obligations — Social security — Regulation (EC) No 883/2004 — Articles 11 and 12 and Article 76(6) — Regulation (EC) No 987/2009 — Article 5 — Posting of workers — Affiliation to a social security scheme — Combating fraud — A 1 Certificate — Refusal of recognition by the Member State where the professional activity is carried out in the event of fraud or abuse.

Tolker