Objective & Aim: People who are exposed to noise on a daily basis, exposure to this risk factor as a physical stressor can have immediate and delayed detrimental effects on concentration, attention, high blood pressure, and so on. Method: The present study examines a set of cognitive factors to assess negative emotional states in depression, anxiety, and stress in a noisy work environment. This case study was performed on 1000 workers of Isfahan Steel Industry. ISO9612 (2009) standard and K&B sound level meter were used to measure the noise pressure level. At the same time, the DASS questionnaire was used to measure the severity of the symptoms of depression, anxiety, and stress. Results: Based on the findings of the study, the age factor on depression, the marital status factor on anxiety and the work shift factor showed a significant effect on employee stress (p <0.05). There was no significant difference in anxiety and depression variables between the case and control groups (p> 0.05). Conclusion: Due to significant positive relationship between the level of intensity and stress in case it is necessary to effective preventive measures to prevent psychological trauma and protect the health of workers in this industry are necessary.