The study performs an empirical study based on the implementation of ANOVA and LSD tests to measure the impact of stress among people with different job titles and ages 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 ANOVA and LSD tests have revealed that there are no meaning differences among people with different job titles but people in different age groups maintained various level of stress.

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