A way of measuring stress at work is the use of self-reported psychological questionnaire. Among them, the Job control demand model from Karasek is widely used to evaluate psychosocial factors at work. The Karasek job strain model has been assessed in 25 000 workers in the Sumer study and allowed to classify the main types of occupations. However, no data regarding emergency physicians scores at the Karasek questionnaire were available, even though burnout exposure is a well-known problematic among health care workers. This absence is particularly unfortunate as emergency physicians often needs to deals with life threatening emergency in a short amount of time, following regularly long and craving shifts. A preliminary study with a low sample size reported in concrete terms the atypical "out of limit" situations of emergency physicians, with a decision latitude among the lowest and the highest psychological demand ever reported. Moreover, variation of stress at work has been linked with professional experiences. Karasek questionnaire is supposed to assess a long-term stable perception of work, despite the absence of study comparing Karasek scores within different conditions in the same participant. It is also important to explore protective factors that might help alleviate perceived stress and that are quite easy to integrate into medical organizations or in daily lifestyle.