| March 2004 - Present |
| Chief Executive Officer of POSCO E&C |
|
| March 2002 - March 2004 |
| General Superintendent of Gwangyang Works as Vice President |
|
| March 1998 - March 2002 |
| General Superintendent of Gwangyang Works as Executive Director |
|
| February 1997 - March 1998 |
| Chief Executive Officer of Changwon Specialty Steel (dispatched from POSCO) |
|
| January 1996 - February 1997 |
| Vice Superintendent of Pohang Works |
|
| March 1994 - January 1996 |
| Director |
|
| September 1986 - March 1994 |
| Senior Manager of Stainless Business Division |
|
| March 1971 - September 1986 |
| Pohang Steel Works (currently POSCO) |