| 2019-Present |
Lee & Ko |
| 2017-2018 |
Chief of Human Resources Management, Health Insurance Review &Assessment Service |
| 2015-2017 |
Chief of Seoul Branch, Health Insurance Review &Assessment Service |
| 2014-2015 |
Chief of Classification System, Health Insurance Review &Assessment Service |
| 2013-2014 |
Chief of Drug Administration, Health Insurance Review &Assessment Service |
| 2009-2012 |
Chief of Human Resource Management, Health Insurance Review &Assessment Service |
| 2008-2009 |
Director of Daejeon Support Operations, Health Insurance Review &Assessment Service |
| 2005-2007 |
Chief of Evaluations, Health Insurance Review &Assessment Service |
| 2001-2005 |
Assistant Director of Treatment Material Management, Health Insurance Review &Assessment Service |
| 2000-2001 |
Assistant Director of Planning and Budget, Health Insurance Review &Assessment Service |
| 1993-2000 |
Assistant Director of Human Management , Health Insurance Review &Assessment Service |
| 1984-1993 |
Manager of Gyeongnam Branch, Regional Insurance Dept., Auditing Dept., and Investigation &Statistics Dept., Health Insurance Review &Assessment Service |