Chun Hae-sung is currently working as a Visiting Fellow, Institute for Peace and Unification Studies, Seoul National University. Since 1987, he has worked in the Ministry of Unification and served as a spokesperson for the MOU, the deputy minister for Inter-Korean Dialogue, the deputy minister for Unification Policy, and the Vice Minister of Unification(2017-2019). He served as the first South Korean Chief of the inter-Korean Joint Liaison Office. He continues his research on the establishment of peace on the Korean Peninsula and the development of inter-Korean relations, including unification, North Korea policy, and inter-Korean dialogue.