This Act shall enter into force on the date of its promulgation : Provided that the amended proviso to Article 27 (2) shall enter into force on January 1, 2015, and the amended proviso to Article 33 (3) shall enter into force on the following respective dates :
1. Public institutions under Article 4 of the Act on the Management of Public Institutions and employers who ordinarily employ 300 workers or more : July 1, 2011
2. Employers who ordinarily employ 200 workers or more but less than 300 workers : January 1, 2012
3. Employers who ordinarily employ 100 workers or more but less than 200 workers : January 1, 2013