- 1962 - Present
- On December 26, 1962, the government organization was restructured to that of the presidential system with the amendment of the Constitution. MOLEG was restored to its independent status as a federal administrative body under the jurisdiction of the Prime Minister, the status of which continues to this day.
- 1954-1960
- Reorganized with the amendment of the Constitution (1954-1960)
As the Prime Minister System abrogated on November 29, 1954, the name of MOLEG had changed to Government Legislation Office under the Ministry of Justice (institution of cabinet rank) occupying the position as an independent National Administrative Institution.
When the Cabinet system came into existence in accordance with the amendment of the Constitution on June 15, 1960, the State Council Secretariat was newly established and the MOLEG was reinstituted as the Legislation Bureau of the State Council Secretariat.
- 1948
- MOLEG was founded (May 15, 1948)
MOLEG was instituted when the government of Korea was established on August 15, 1948, with one agency, three divisions, ten departments and a library taking over the Law Drafting Bureau, the Law Research Bureau and the Library of the Secretariat of the Judicial Administration, which existed during the interim government period of Korea. Much like the organizational structure of today, MOLEG was consigned under the Prime Minister who was able to attend and speak at any meeting of the State Council.
- 1392 - 1892
- The Geom-sang-jo-rye-sa which played the role as MOLEG during the Joseon Dynasty In the early era of Joseon Dynasty (1392-1910), the Geom-sang-jo-rye-sa under Eui-jeong-bu was in charge of government legislative affairs. Before the decree of the king was presented to the Eui-jeong-bu, the decree had to go under close examination by the predecessor body of the present Ministry of Government Legislation. This system ensured that there would not be any inconsistencies or conflict uring the execution of administrative affairs.
