Introduction: According to the increasing growth of industries and technologies and consequently increasing accidents and occupational diseases, this study aimed to by analyzing the main causes of accidents in Yazd Combined Cycle Power Plant and finally prepared the situation to present suitable control measures.

Methods: This study is a descriptive–analytical, which is analyzed the trend of occupational accidents. In this study, information collected through check lists and interviews with accident victims and based on the data extracted, the accident indicators were calculated. Then, the data were analyzed using SPSS software.

 Results: During an 8-year- period, out of 1189 workers, 287 cases of occupational accident have been registered. Results indicated that there was a meaningful relationship between the age, job experience and marital status. The most types of accidents and their causes were related to the trauma and unsafe acts, respectively. The most events had occurred in winter, at the beginning of the day shift in the maintenance unit. Accident indicators decreased specially accident frequency rate (AFR). In this study, maximum and minimum value of frequent-severity index was 1.74 in 1383 and 0.56 in 1390, respectively. In addition the results showed that, education level on accident frequency rate and income monthly had a protective effect on accident frequency rate and severity- frequency rate (FSI).

Conclusion: Nowadays, to prioritize hazards and corrective actions, it was used the results of techniques and risk assessments. The results related to accidents can be used at comprehensive database as well as they wereutilized for qualifying the risk the risk assessments.