Abstract: Objective To evaluate the occupational stress,job burnout and influencing factors among petrochemical workers,and to provide theoretical guidance for promoting the physical and mental health of petrochemical workers. Methods From June to July 2021,front-line workers in 4 petrochemical enterprises in Hainan were selected as research objects by random cluster sampling method,and the work content questionnaire based on job demand control model（JDC） and effort-reward imbalance model（ERI） and the Maslach burnout inventory-general survey were used for investigation,and the data were analyzed. Results Completed questionnaires were received from 434 petrochemical workers,of whom 32.3% had a high level of burnout. The detection rates of job JDC and ERI occupational strain were 51.2% and 68.4%,respectively. The total burnout scores of petrochemical workers in the group with occupational stress based on ERI model were higher than those in the group without occupational stress（P<0.05）. Occupational stress based on ERI model was positively correlated with burnout（P<0.05）. Gender,education,alcohol consumption and occupational strain based on ERI model were considered as significant factors for burnout（all P<0.05）. Conclusion Petrochemical workers suffer from a certain degree of occupational stress and burnout,and burnout will increase as the pay-reward imbalance of workers increases.

Key words: Petrochemical workers, Job burnout, Occupational stress