Objective To investigate the occupational stress level of radiation exposed workers in Guangdong Province and explore the factors that influence occupational stress. Methods By random sampling method,306 radiation workers of Guangdong Province were selected in this study. The simplified Chinese version of Effort-Reward Imbalance( ERI)questionnaire was used to assess occupational stress levels. The scores of 3 dimensions including external effort,reward and internal commitment and their differences were anal...