Chairman, The Association of Korean Exhibition Industries (AKEI)|2010-2012
Director of the Board, The Global Association of the Exhibition Industry (UFI)|2010
Director of the Board, Asian Federation of Exhibition and Convention Associations (AFECA)|2009-2011
CEO & President, Daegu Exhibition and Convention Center (DEXCO)|2006-2011
Director, KOTRA North America head office, Russia and CIS head office|2001-2005
Executive Vice President and a Director of the Board, Korea Trade-Investment Promotion Agency (KOTRA)|2003-2005
Director, KOTRA Overseas offices in New York (U.S.A.), Moscow (Russia), Helsinki (Finland) London (U.K.), Jedda (Saudi Arabia) Kuala Lumpur (Malaysia), Warsaw (Poland)|1976-2005
Secretary-General, The Association of Northeast Asia Regional Governments (NEAR)|2006-2011
Executive Committee Member, UNDP
|2007-2011
Division Chair, Division of Administration and Culture, Committee on the Development of Gyeongsangbuk-do Province for the 21st Century|1995-2006
President, Research Institute of Politics and Society|1991-1993
Visiting Professor, Hosei University, Japan|1985-1987
Visiting Research Professor, University of California, Berkley, U.S.A.|1975-1980
Honorary Professor, Dean, and Professor, Teacher’s College of Daegu University
Reporter and Editorial writer, Daegu Maeil Newspaper|1964-1973