1. In Korea, occupational health nurses have been working as health managers at the workplace and as part of a hospital based group occupational health service since 1991. The role of occupational health manager, required by law, includes providing preventive and primary care, safety management, and inspection of the work environment. 2. Recently, occupational health nursing practice-based lecture has increased, and more emphasis has been placed on the process of occupational health nursing in both undergraduate and graduate programs. 3. The Korean Association of Occupational Health Nurses and the Korean Academic Society of Occupational Health Nursing have been working to develop professional competence for occupational health nurses since 1991. 4. Until the mid 1990s, occupational health nursing research focused primarily on role and job satisfaction of occupational health nurses. However, the number of research studies has dramatically increased and, gradually, survey studies have been replaced by studies with experimental design.