Eunok Han is a radiation safety expert and serves as an expert at the Korea Academy on Nuclear Safety. She is also currently an executive member of Women in Nuclear Global, a member of ICRP task group 124 of International Commission on Radiological Protection, a vice president of Women in Nuclear Korea, a vice president of Korea Nuclear Society, a safety expert member of Hanul Nuclear Safety Council (Nuclear Safety and Security Commission), a social contribution committee member of Korea Federation of Women's Science and Technology Associations, and a committee member of Korean Association for Radiation Protection.