Report of a survey undertaken as a first step in determining answers to the questions regarding how licensed practical nurses (LPN's) supplement registered nurses (RN's) in industry, need for additional training, effective functioning, and supervision of the LPN's. The survey is designed to provide a profile of licensed practical nurses working in occupational health. Topics include technical notes on methodology, work and setting, administrative and professional functioning, educational characteristics, economics and general comments. Results indicate that LPN's can supplement the nursing service only in large occupational health nursing services staffed by one or more registered nurses and that LPN's can become a potential manpower source to staff occupational health programs for workers if utilized within the standards set by both nursing levels. Continuing education is recommended so as to equip LPN's for providing emergency health services in coronary heart disease and other chronic diseases, in hearing and vision conservation programs, and in new legislation governing the health and safety of industrial workers.