Jeonhwan Lee worked at the Tax & Customs Office, Ministry of Strategy and Finance, for five years and was directly involved in amendment of tax laws as a deputy director of the Corporate Tax, Value Added Tax and Income Tax Divisions. Mr. Lee's career at the National Tax Service encompasses various appointments: head of division at a local tax office; secretary to commissioner of National Tax Service; head of Gongju, Jungbusan and Suyeong District Tax Offices; and director of Taxpayer Protection Office, Jungbu Regional Tax Office. At the National Tax Service, he assumed office of assistant commissioner of Planning and Coordination Office, director general of Corporate Taxation Bureau, director general of Collection and Legal Affairs & PR Bureau, and director general of Individual Taxation Bureau. He also served as commissioner of Busan Regional Tax Office before retiring as deputy commissioner of National Tax Service.