Organizational stress and workplace health have become an issue of great concern over the last decade. Although some workplace stress is normal, but among project manager is excessive. Project managers are considered as the key persons and one of the most important elements of any project, and their performance highly influences on the overall success of the project. Due to the nature of their work, they tended to face a multitude of stressors that always interfere with their productivity and impact their physical and emotional health. Current study focuses on “job stress” as one of the main factors affecting project managers’ performance. Within this research, preliminarily time pressure, workload, limited resources, limited authority and conflict were studied as the main sources of job stress among project managers. Furthermore, and after conducting a pilot study, some other factors were identified and added to the initial five factors. Eventually, the main survey focuses on twelve (12) sources of stress that was carried out among thirty (30) international project managers; and eleven (11) factors were introduced as the most important sources of stress among project managers. Keywords: Job stress among project manager; conflict at workplace; sources of job stres
