1997
Awarded honorary doctor by Africa University

1952-1953
Medical doctor, UN Police hospital

1957-1962
Pastor, Seoul Jeonnong Methodist Church

1962-1967
Chaplain, Korean Air Force

1970-1971
Chief Chaplain, Korean Air Force Academy

1974
Visiting pastor, Epsom Methodist Church, London, England

1971-1973
Lecturer, Methodist Theological Seminary & Graduate School of Methodist Theological Seminary

1971-1973
Lecturer, Ewha Womans University. Kangnam University, International University

1979-1983
Visiting professor, Asia United Seminary

1994-1996
Bishop, Korea Methodist Council

Adjunct professor, Fuller Theological Seminary, U.S.A.

Adjunct professor, Wesley Theological Seminary, U.S.A.

Adjunct professor, United Theological Seminary, U.S.A.

Adjunct professor, St. Paul Theological Seminary, U.S.A.

Adjunct professor, Korea Methodist Theological Seminary

Adjunct professor, Yonsei Graduate School

Member of Board of Directors,

Yonsei University, Handong University

Chairman, Kwanglim Welfare Foundation

President, Korean Institute for Pastoral Ministry

Director, Christian Mission Torch Foundation

President, Wesley Evangelical Council-Korea

Chairman, Lausanne Movement-Korea

Director, Methodist Hour International, U.S.A.

Director, A Centennial Memorial Event Committee of Korean Christianity

Chief of Board, World Vision, Korea

President, World Methodist Council

President, Korea Christian Ministers Council

Chairman, Methodist Leader? Training Aid Association

Member, Korean Democratic Peace Unification Counsel Committee

Director, Munyoung School

Treasurer, Il-ga Memorial Awards

Chairman, Korean Wesleyan Council

Chief Director, Korea Methodist Theological Seminary

Director, World Vision International

Senior Pastor, Kwanglim Methodist Church

Named endowed chair professor, Asbury Theological Seminary