This study focused on measuring the level of job stresses felt by employees in Jordanian tourism companies in Amman; based on the knowledge of these stresses and showing the impact of these sources to the total job stress level and studying the differences in the level of feelings of companies personnel depending on their different demographic characteristics. 242 questionnaires were analyzed and distributed randomly on a sample of companies. The findings revealed that the most employees in the study sample feel stressed at work and that the job stresses which are caused by the organization was one of the most influential sources of raising the level of job stress.