- Academic Service and Appointments
- Korea University, College of Business Administration-Professor : 1997-present.Korea University,
- Labor Research and Education Institute-Director : 1996-2007.
- Korea University, College of Business Administration-Associate Professor : 1992-1997.
- Korea University, College of Business Administration-Assistant Professor : 1989-1991.
- Waseda University, Graduate School of Asia-Pacific Studies-Visiting Professor : 2002 ~ 2003
- Tokyo University, College of Economics-Research Fellow : 1995-1996.
- University of Hawaii, Department of Management-Visiting Assistant Professor : June.1992-August.1992.
- West Virginia University, Department of Management, College of Business and Economics-Assistant Professor : August 1986-August 1989.
- The University of Iowa, Department of Industrial Relations and Human Resources, College of Business Administration-Coordinator and Teaching Assistant : June 1984-August 1986.
- The University of Iowa, Industrial Relations and Human Resources, College of Business Administration-Research Assistant : January 1983-May 1984.
- Korea Industrial Leasing Co. Ltd, Department of Marketing-Marketing Specialist : January 1980-August 1980.
- Samsung-Corning Co.Ltd, Office of Planning and Control-Coordinator : Sep. 1978-Dec.1979.
- Service & Professional Association Appointments and Assignments
- The Korean Academy of Management-President : 2004-Present.
- The Korean Association of Personnel Administration-President : 2002-2003.