1983. Judicial Research and Training Institute
1983. Judge Advocate Officer, Korean Navy
1986. Judge, Suwon District Court
1988. Judge, Seoul Family Court
1990. Judge, Gimcheon Branch, Daegu District Court
1992. Judge, Seoul Central District Court
1994. Judge, Seoul High Court
1995. Cheif Judge, Yeongdeok Branch, Daegu District Court
1997. Judge, Seoul High Court
1999. Chief Judge, Andong Branch, Daegu District Court
2000. Presiding Judge, Incheon District Court
2002. Presiding Judge, Seoul Central District Court
2004. Managing Partner, Hanseung
2014. Managing Partner, Chungjeong
2020. Managing Partner, CLASS