This study aimed to compare attributional styles, job satisfaction, and death anxiety among the staff and operating personnel of Tehran Emergency Service. This study was an Ex-Post Facto study. The statistical population included all staff and operating personnel of Tehran Emergency. In this study, the sample size is 310 people, 155 people from operating personnel and 155 people from the personnel of Emergency. The sampling method was a multi-step method. Data collection was done by the use of death anxiety questionnaire of Templer, attributional styles of Seligman and job satisfaction questionnaire of Linz. Findings: data analysis was done by the use of univariate and multivariate two-way analysis of variance (ANOVA), Mann-Whitney and T-test. The results indicated that the mean of attributional styles, death anxiety and job satisfaction of Emergency personnel was higher than operating forces. The attributional style of most people is external style and this can have an adverse effect on their motivation, effort and finally on their success and satisfaction. In addition, death anxiety is more tangible among personnel who have witnessed the death of other people.