The provisions of Article 2 amending Article 100-2 and Article 120, item (iv) of the Labor Standards Act, and the provisions of paragraph (1) of the following Article, Article 3 of the Supplementary Provisions and Article 17 of the Supplementary Provisions (limited to the provisions adding one item after Article 4, item (xxx) of the Act for Establishment of the Ministry of Labour (Act No. 162 of 1949) and the provisions amending Article 4, items (xxxii) and (xxxiv) and Article 9, paragraph (1) of that Act): the date of promulgation