

- MOLEG’s primary duties are comprehensive control and coordination of the government's legislative affairs, Statutory Examination, Statutory Interpretation, and Statutory Improvement.
- Statutory Examination
- Review of legislative bills such as draft Acts and subordinate statutes, draft Treaties, draft Ordinances of the Prime Minister, and Ministerial Ordinances.
- Verification of legislative bills and adjustment processes of them including possible inconsistencies and irregularities based on the Constitution or laws and regulations.
- MOLEG is an exclusive institution that specializes in monitoring all government legislative affairs, introduces and promulgates the reviewed legislative bills, and further introduces and promulgates legislative bills to the State Council that are transferred from the National Assembly.
- MOLEG is comprised of three Legislative Bureaus of Administrative Affairs, Economic Affairs, and Social and Cultural Affairs for Statutory examination. Around 50 legislative professionals including Government Legislative Officers review legislative bills from various government ministries.
- MOLEG established the 「Legislative Support Group」 within its ministry in June 2006 for the purpose of assembling ever-widening government opinions about legislative bills from members of the National Assembly to further examine the bills they draft thoroughly, and cooperate and coordinate different opinions from related ministries and institutions.
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- Government Legislation Planning System
- MOLEG establishes and executes Government Legislation Planning System for the effective processing of annual government legislation as well as to summarize all the legislations of various ministries.
- Government Legislation Planning System controls the order of priority, opportunity and contents of government legislative bills across the entire government spectrum.
- Building of Government Legislation Proceeding Status System
- MOLEG built a system to verify and control government's legislation status and also to supply legislative information.
- The function of this system is to coordinate differing opinions among the ministries as citizenship participation expands toward the process of legislation.