This study aims to identity affected factors in PTSD of metro workers. The subjects of this study were the 209 workers who experienced traumatic accident on the job. The collected data was analyzed by using frequency, percentage, mean and standard deviation, t-test, ANOVA and multiple regression analysis. As a result of this study, PTSD of metro workers was depended on their hobby, job position, job satisfaction, support of Colleagues, psychological characteristics. And factors of anxiety, phobic anxiety and hobby accounted for 56.9% of variance in PTSD. It is recommended to develop and evaluate of preventing of PTSD among metro workers who experienced traumatic accident on the job.