 After opening his career as a lawyer in Seongnam, Gyeonggi Province, he served as the head of labor counseling centers in Icheon and Gwangju, Gyeonggi Province, and was in charge of defending the current situation and labor case.In 1994, it formed the Seongnam Citizen's Solidarity for Participatory Democracy (formerly Seongnam Citizens' Association).In 2000, he raised suspicions of preferential treatment for "replacement of the Bundang Baekgung and Jeongja districts."