Member, Self-Regulatory Review Committee, Ministry of Unification (2025.1.-Present)

Member, Disciplinary Committee, Ministry of Unification (2024.1.-Present)

Chairman, Ad Hoc Committee on South and North Korean Law Research, Legal Advisory Committee, Ministry of Justice (2023.3.-2024.2.)

Member, South-North Korea Exchanges and Cooperation Support Association (2022.6.-Present)

Chairman, Unification Research Committee, Korean Bar Association (2022.6.-2024.5.)

Member, Legal Counsel of Gaesung Industrial Complex Project, Ministry of Unification (2021.6.-Present)

Member, Conflict Management Deliberation Committee, Ministry of Unification (2021.5.-Present)

Member, The National Unification Advisory Council (2020.10.-2021.8.)

Member, Unification Research Committee, Korean Bar Association (2020.6.-Present)

Member, Committee for Unification Legislative System, Ministry of Unification (2020.5.-Present)

Member, Committee for the Five Northern Korean Provinces, Ministry of the Interior and Safety (2018.7.-2019.7.)

Member, Gaesung Industrial Complex Legal Advisory Committee, Ministry of Unification (2018.6.-2024.5.)

Member, North and South Broadcasting Communication Exchange Promotion Committee, Korea Communications Commission (2017.11.-2019.10.)

Member, The National Unification Advisory Council Jongno-Gu Council (2017.9.-2021.8.)

Member, Unification Judicial Study Commission, Court Administration Office of the Supreme Court of Korea (2017.4.-Present)

Member, Disciplinary Committee, Ministry of National Defense (2016.12.-2018.11.)

Member, Ministry of Patriots & Veterans Affairs Welfare Inquiry Commission (2016.3.-2018.2.)

Member, Korea Anti-Doping Agency (2016.1.-Present)

Member, Regulatory Review Committee, Ministry of Government Administration and Home Affairs (2015.4.-2017.3.)

Member, Ad Hoc Committee on South and North Korean Law Research, Legal Advisory Committee, Ministry of Justice (2014.2.-2015.1., 2015.4.-2023.3.)

Member, Designation and Management of Special High School, Seoul Metropolitan Office of Education (2013.10.-2016.9.)

Member, Inquiry Commission of Maintenance Plan of Pension of Private School, Ministry of Education (2013.10.-2015.9.)

Member, Policy Advisory Committee, Ministry of Unification (2013.9.-2016.8., 2021.12.-Present)

Member, Special Judicial System Study Commission, Court Administration Office of the Supreme Court of Korea (2013.4.-2017.3.)

Member, Administrative Disposition Committee, Ministry of Education, Science and Technology (2012.9.-2014.9.)

Member, Judging Committee of registration of lawyer legal specialty, Korean Bar Association (2012.7.-2016.6.)

Member, Legal Advisory Committee, Ministry of Justice (2012.3.-2024.2.)

Legal Adviser, Seoul Metropolitan Office of Education (2011.12.-2013.12.)

Member, Patriots and Veterans Entitlement Commission, Ministry of Patriots and Veterans Affairs (2011.11.-2013.12.)

Member, Advisory Committee on North Korean Law, Ministry of Government Legislation (2011-2013)

Member, Central Administrative Appeals Commission (2011.4.-2013.4.)

Member, Bar Examination Committee, Ministry of Justice (2011)

Legal Counsel, Ministry of Education, Science and Technology (2010.5.-2013)

Member, Review Tax Evaders Committee (Seoul Regional Tax Office) (2008.7.-2013.10.)

Member, Interpretation Act Review Committee (Ministry of Government Legislation Committee) (2005.8.-2009.7.)

Legal Counsel, Seoul Regional National Tax Service (2003-2011.10.)

Kim & Chang (2000-Present)

Judge, Seoul Administrative Court, etc. (1991-2000)

Judge Advocate, Republic of Korea Navy (1988-1991)

Vice Chairman, Korea Public Administration Case Study Association (2017)

Vice Chairman, Unification and North Korean Law Studies (2017-present)

Vice Chairman, Korean Public Law Association (2016)

Member, Tax Law Association