Abstract. The preliminary survey showed the number of incidents at occupational accidents to nurses at Dr. MidiyatoSuratani Naval Hospital, Indonesia, was high at 82%, and nurses in the Emergency Unit experienced more incidents at 72.2%. This study analyzed the relationship between health behavior (knowledge, attitude, action) and incidents at work in the Emergency Unit of Dr. MidiyatoSuratani Naval Hospital. The method used was a descriptive-quantitative study with a cross-sectional design. The samples were nurses in the Emergency Unit of Dr. MidiyatoSurataniNaval Hospital. This study used a univariate analysis and bivariate analysis using the Chi-Square test. The results showed that incidents at work in the Emergency Unit of Dr. MidiyatoSurataniNaval Hospital were 72.8%. The nurses lacked knowledge (61.1%) and performed false action (66%) but hada good attitude (72.2%). The chi-square test found that there was a significant relationship between knowledge and occupational accidents, so is action and occupational accidentsin the Emergency Unit of Dr. MidiyatoSurataniNaval Hospital. There is no significant relationship between attitude and occupational accidentsin the Emergency Unit of Dr. MidiyatoSurataniNaval Hospital. To decrease risks of occupational accidentsoccurring to nurses, the hospital should design a policy for planning and implementing an occupational safety and health program.