Judgment_paragraph 31 · Criminal proceedings against Ömer Altun and Others (C-359/16)

31Nevertheless, that principle is stated to be ‘subject to Articles 14 to 17’ of Regulation No 1408/71. In certain specific situations, the unrestricted application of the general rule set out in Article 13(2)(a) of that regulation might in fact create, rather than prevent, administrative complications for workers as well as for employers and social security authorities, which could impede the freedom of movement of the persons covered by that regulation (judgment of 4 October 2012, Format Urządzenia i Montaże Przemysłowe, C‑115/11, EU:C:2012:606, paragraph 31 and the case-law cited). Special rules governing such situations are set out, in particular, in Article 14 of Regulation No 1408/71.