Objective: This study aimed to evaluate the occupational stress presence and levels in professional of the Mobile Emergency Service (SAMU) of a municipality in Northeast Brazil. Method: It is a descriptive and investigative research, with the application of a questionnaire. The researched material was 30 professionals. A semi-structured interview technique for data collection and descriptive statistical analysis were used, using percentage calculation and presentation of results in tables. Results: As the scientific enterprise product here effected, it is highlighted that 40% of respondents are nurses, male, with service time ranging between 2 and 3 years (40%) and working hours between 40 and 60hours weekly (36.7%). After analyzing the results that identify the symptoms of stress in professionals interviewed, it could be seen that the verbalized symptoms are related to problems in the musculoskeletal, gastrointestinal and nervous systems, as well as sleep problems Conclusions: According to this data, it is believed that the adoption of mitigation measures of stress with the administrative interventions, adopting a preventive culture, aiming to occupational safety and health professional is very importance to improve the quality of life of these people.