This Act comes into effect as of the day specified by Cabinet Order within a period not exceeding one year from the date of promulgation; provided, however, that the provisions set forth in the following items come into effect as of the days specified in those items.

With regard to an employer who, at the time this Act comes into effect, employs 100 or fewer workers on a regular basis, and workers employed by that employer, the provisions of Chapter V, Chapter VI, and Article 23 through Article 24 of the Act on Childcare Leave, Caregiver Leave, and Other Measures for the Welfare of Workers Caring for Children or Other Family Members as amended by the provisions of Article 2 (hereinafter referred to as "the new Act") do not apply until the date specified by Cabinet Order within a period not exceeding three years from the date of promulgation. In this case, the provisions of Article 23 and Article 24 of the Act on Childcare Leave, Caregiver Leave, and Other Measures for the Welfare of Workers Caring for Children or Other Family Members prior to the amendment by the provisions of Article 2 remain in force.

A worker who intends to make an application under the provisions of Article 5, paragraph (1) or paragraph (3) of the new Act, as applied by replacing the relevant terms pursuant to the provisions of Article 9-2, paragraph (1) of the new Act, in order to take childcare leave under those provisions on or after the day this Act comes into effect (hereinafter referred to as "the effective date"), may make that application even before the effective date, in accordance with those provisions and the provisions of Article 5, paragraph (4) of the new Act, as applied by replacing the relevant terms pursuant to the provisions of Article 9-2, paragraph (1) of the new Act.

With regard to a dispute pertaining to mediation under paragraph (1) of Article 5 of the Act on Promoting the Resolution of Individual Labor-Related Disputes (Act No. 112 of 2001) (including cases where applied by replacing the relevant terms pursuant to the provisions of Article 21, paragraph (1) of the same Act), which is, at the time the provisions listed in Article 1, item (iii) of the Supplementary Provisions come into effect, pending before the Dispute Coordinating Committee under Article 6, paragraph (1) of the same Act or a mediator designated pursuant to the provisions of Article 5, paragraph (1) of the same Act as applied by replacing the relevant terms pursuant to the provisions of Article 21, paragraph (1) of the same Act, the provisions then in force continue to govern, notwithstanding the provisions of Article 52-3 of the new Act (including cases where applied by replacing the relevant terms pursuant to the provisions of Article 60, paragraph (2) of the new Act).

With regard to the application of penal provisions to an act committed before the day the provisions listed in Article 1, item (ii) of the Supplementary Provisions come into effect, the provisions then in force continue to govern.

Beyond what is provided for in these Supplementary Provisions, the transitional measures necessary in connection with the enforcement of this Act (including transitional measures concerning penal provisions) are specified by Cabinet Order.

The Government is to, in the case where five years have passed after this Act comes into effect, review the state of enforcement of the provisions as amended by this Act, and, when it finds it necessary, take the required measures based on the results of that review.