Objective: To determine the effects of workplace social capital (WSC) on preventive health behaviors and illness coping behaviors of nurses.Methods: A self-administered questionnaire was completed by nurses working in a hospital. Descriptive statistics were conducted on basic characteristics, health literacy, and WSC. The effects of WSC on preventive health behavior and illness coping behavior were examined using logistic regression analysis.Results: The data of 600 nursing professionals were analyzed. Health literacy showed a difference in WSC mean values. The WSC of the subjects tended to maintain good lifestyle habits in eating breakfast, nutritional balance, and salt intake in preventive health behaviors. The illness coping behaviors of the subjects with high WSC tended to consult with medical staff or friends when feeling unwell, and to make time to visit a hospital. When the exclusionary workplace culture increased, there was a tendency to not seek medical examination.Conclusion: The WSC of nurses with a health literate human environment may have a positive influence on preventive health behaviors and illness coping behaviors, such as lifestyle, counseling, and medical consultation. On the other hand, exclusionary workplace culture may hinder the maintenance of health because of the tendency of not receiving medical examinations.