Judgment_paragraph 37 · European Commission v Republic of Malta (C-12/14)

37It follows from the principle of sincere cooperation, laid down in Article 4(3) TEU, that every Member State, for the purposes of the declarations covered by Article 5 of Regulation No 1408/71 and Article 9(1) of Regulation No 883/2004, must carry out a proper assessment of its own social security regimes and, if necessary, following that assessment, declare them as falling within the scope of those regulations (see, by analogy, judgment in FTS, C‑202/97, EU:C:2000:75, paragraph 51, and Herbosch Kiere, C‑2/05, EU:C:2006:69, paragraph 22). It also follows from this principle that the other Member States are entitled to expect that the Member State concerned had fulfilled those obligations.