Stress has been considered a major negative impact on employees worldwide. The present century is known as the stress era since human life is full of stress and strain. Workers know how their anxiety and stress levels impact their capacity for productivity. The main reason for stress presence is the complexity of the human personal, social, and ecological environment, and simultaneously interactions of humans with its surrounding. In terms of psychological sciences, stress is a feeling of mental tension. Low levels of stress are more desirable, and even healthy, and facilitate human performance. However, high levels of stress result in social, psychological, biological problems, and serious harm to people. This project shows innumerable studies in this field investigated the role of different related factors of stress and aimed to aggregate various dimensions of theoretical issues and influences of stress in human everyday life especially in work. Also, this project introduces multiple devices for stress measurement and how they are conducted to employees in order to measure their stress levels. A conducted survey done with 30 engineers working at NPCC, the results have shown different levels of stress on conducted employees. However, the present study was an effort to make a theoretical unity of different measurement devices. According to the obtained results and data, stress can’t be investigated and observed via a single study, therefore, incorporation is much needed by psychologists to analyze and develop future frameworks for minimizing and controlling work-related stress.