Judgment_paragraph 39 · Sindicatul Familia Constanţa and Others v Direcţia Generală de Asistenţă Socială şi Protecţia Copilului Constanţa (C-147/17)

39In the second place, it should be noted that it is clear both from Article 137 EC (now Article 153 TFEU), which is the legal basis of Directive 2003/88, and from recitals 1, 2, 4 and 5 thereof as well as the wording of Article 1(1) of that directive, that its purpose is to lay down minimum requirements intended to improve the living and working conditions of workers through approximation of national provisions concerning, in particular, the duration of working time (see, to that effect, judgment of 12 October 2004, Wippel, C‑313/02, EU:C:2004:607, paragraph 46).