The study performs an empirical study based on the implementation of factor analysis to detect different factors influencing people to have more stress in a hydropower unit located in city of Esfahan, Iran. The study performed the survey among all 81 people who were working for customer service section of this company and consisted of two parts, in the first part; we gather all private information such as age, gender, education, job experience, etc. through seven important questions. In the second part of the survey, there were 66 questions, which include all the relevant factors impacting employees' stress. Cronbach alpha was calculated as 0.946, which is well above the minimum acceptable level. The implementation of factor analysis has detected 16 important groups of factors and each factor is determined by an appropriate name. The results of our factor analysis show that among different factors, difficulty of working condition as well as work pressure are two most important factors increasing stress among employees.

Aminjafari, B., Ghojav, K & Vakili, D. (2012). A social work study using factor analysis on detecting important factors creating stress: A case study of hydro-power employees.Management Science Letters, 2(5), 1761-1768.

Bassett, J.R., Marshall, P.M., & Spillane, R. (1987). The physiological measurement of acute stress (public speaking) in bank employees. International Journal of Psychophysiology, 5(4), 265-273

Chiang, F.F.T., Birtch, T.A., & Kwong Kwan, H. (2010). The moderating roles of job control and work-life balance practices on employee stress in the hotel and catering industry. International Journal of Hospitality Management, 29(1), 25-32.

Coelho, F., Augusto, M., & Lages, L.F. (2011). Contextual actors and the reativity of rontline mployees: The mediating ffects of role stress and intrinsic motivation. Journal of Retailing, 87(1), 31-45.

Çekmecelioğlu, H.G., & Günsel, A. (2011). Promoting reativity mong mployees of mature industries: The Effects Of Autonomy And Role Stress On Creative Behaviors And Job Performance. Procedia - Social and Behavioral Sciences, 24, 889-895.

Costa, M.F., Mendlowicz, M.V., Vasconcelos, A.G.G., Berger, W., da Luz, M.P., Figueira, I., Rosa, M.L.G. (2011). Confirmatory factor analysis of posttraumatic stress symptoms in Brazilian primary care patients: An examination of seven alternative models. Journal of Anxiety Disorders, 25(7), 950-963

de Ruyter, k., Wetzels, M., & Feinberg, R. (2001). Role stress in call centers: Its effects on employee performance and satisfaction. Journal of Interactive Marketing, 15(2), 23-35.

Gupta, N., & Beehr, T.A. (1979). Job stress and employee behaviors. Organizational Behavior and Human Performance, 23(3), 373-387.

Kim, B.P., Murrmann, S.K., & Lee, G. (2009). Moderating effects of gender and organizational level between role stress and job satisfaction among hotel employees. International Journal of Hospitality Management, 28(4), 612-619.

Law, J., Pearce, P.L., & Woods, B.A. (1995). Stress and coping in tourist attraction employees. Tourism Management, 16(4), 277-284.

Slate, R.N., & Vogel, R.E. (1997). Participative management and correctional personnel: A study of the perceived atmosphere for participation in correctional decision making and its impact on employee stress and thoughts about quitting. Journal of Criminal Justice, 25(5), 397-408.

Smith, M.J., Carayon, P., Sanders, K.J., Lim, S-Y., & LeGrande, D. (1992). Employee stress and health complaints in jobs with and without electronic performance monitoring. Applied Ergonomics, 23(1), 17-27.Saastamoinen, P., Laaksonen, M., Leino-Arjas, P., & Lahelma, E. (2009). Psychosocial risk factors of pain among employees. European Journal of Pain, 13(1), 102-108.

Tabatabaei, S., Hosseinian, S., & Gharanjiki, B. (2011). General Health, Stress Associated to the Work and Job Satisfaction of Hormozgan Cement Factory Employees in Iran. Procedia - Social and Behavioral Sciences, 30, 1897-1901.

Vearing, A., & Mak, A. S. (2007). Big five personality and effort–reward imbalance factors in employees’ depressive symptoms. Personality and Individual Differences, 43(7), 1744-1755.

Watson, R., Yanhua, C., Ip, M.Y.K., Smith, G.D., Wong, T.K.S., & Deary, I.J. (2012). The structure of stress: Confirmatory factor analysis of a Chinese version of the stressors in Nursing Students Scale (SINS). Nurse Education Today, In Press.