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:: Volume 3, Issue 4 (Winter 2025) ::
Health Res Develop 2025, 3(4): 27-40 Back to browse issues page
Investigating the relationship between sound level and job stress and noise annoyance in employees of Tehran Province Electricity Distribution Company
Arian Bavafa1 , Hooman Bahmanpour *2 , Ali Mohammadi3
1- Islamic Azad University & -, M.Sc. Student on HSE, SR.C., Islamic Azad University, Tehran, Iran
2- Islamic Azad University & -, Department of HSE, Sha.C., Islamic Azad University, Shahrood, Iran , hbahmanpour@iau.ac.ir
3- Islamic Azad University & -, Department of Environmental Management, SR.C., Islamic Azad University, Tehran, Iran
Abstract:   (432 Views)
Background and purpose: n recent years, noise pollution has become a major challenge in workplaces and a critical concern for occupational safety and environmental protection, increasingly affecting various industries. This study aimed to assess sound levels in one of the electricity distribution companies in Tehran Province and to examine their relationship with occupational stress and noise annoyance among employees.
methods: This applied field study measured sound levels using a portable device and Decibel X, 2023 software. Occupational stress was assessed using the standard NIOSH (1998) questionnaire, and noise annoyance was evaluated using the ISO 15666 questionnaire. Results were compared with selected standards, and data were analyzed using SPSS software.
Results: In administrative offices, the highest sound level was 56.8 dB (Accident Department) and the lowest 33.9 dB (Design and Expert Section), all within the limits of OSHA, WHO, and DOE standards. In operational areas, the highest sound level reached 87.9 dB, and noise exposure reached 71.92 dB (Line Department), exceeding permissible limits, with several stations surpassing DOE thresholds. Noise annoyance was significantly higher in operational areas (62.87) compared to administrative areas (46.46). Occupational stress was rated as moderate in both sections. Sound levels were not associated with occupational stress but showed a direct and significant relationship with noise annoyance (p<0.05).
Conclusion: In operational areas, sound levels exceeded permissible limits, increasing noise annoyance, although occupational stress remained moderate. Controlling noise in operational environments can improve employee well-being.    
Keywords: Noise measurement, noise pollution, environmental annoyance, job stress
Full-Text [PDF 1024 kb]   (53 Downloads)    
Type of Study: Original | Subject: Special
Received: 2025/08/19 | Accepted: 2025/09/27 | Published: 2025/12/31
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Bavafa A, Bahmanpour H, Mohammadi A. (2025). Investigating the relationship between sound level and job stress and noise annoyance in employees of Tehran Province Electricity Distribution Company. Health Res Develop. 3(4), 27-40.
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Volume 3, Issue 4 (Winter 2025) Back to browse issues page
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