1.Enacted and promulgated a total sixteen articles of the Act on March 31, 1947
2.Amended and promulgated a total sixteen articles of the Act on April 22, 1947
3.Amended and promulgated a total seveneen articles of the Act on December 25, 1947
4.Amended and promulgated Article 3, Article 5, and Article 15 of the Act on May 13, 1948
5.Amended and promulgated Article 3 and Article 15 of the Act by the Presidential Order on March 21, 1949
6.Amended and promulgated Article 5 of the Act by the Presidential Order on November 20, 1952
7.Amended and promulgated Article 3 of the Act by the Presidential Order No.3666 on November 20, 1980
8.Amended and promulgated a total fifteen articles of the Act by the Presidential Order No.09900024171 on February 3, 2010, and enacted on January 1, 2012
9.Amendments to Articles 3, 4 and 15
Amendment Date: January 19, 2022
10.Amendments to Articles 3
Amendment Date: April 26, 2023