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:: Volume 9, Issue 3 (summer 2018) ::
j.health 2018, 9(3): 302-313 Back to browse issues page
Effect of Heat Stress on Productivity Loss of Outdoor Workers: A Case Study in a Hot and Dry Climate
R Hajizadeh , S Farhang Dehghan , A Mehri , S.M Jafari , F Golbabaei , H Haghighat jou
Tehran University of Medical Sciences,
Abstract:   (487 Views)
Background & objectives: Heat stress at workplaces can cause several problems including decreased thermal comfort and increased heat strain; moreover, it can effect negatively on worker performance and productivity. The present study aims to investigate the effect of heat stress on performance loss among outdoor workers in a hot and dry climate.
Methods: An analytic study was conducted during four months from June to September 2013, in one of the provinces of Iran (Qom). Environmental parameters including dry temperature, surface temperature of soil , solar radiation, relative humidity and air velocity were measured in weather stations every ten minutes between 7 am and 7 pm (in total, 8598 measurements). Potential labor performance losses based on WBGT (Wet Bulb Globe Temperature) heat stress index provided by Australian Bureau of Meteorology were determined using a graph presented by Kjellstrom. SPSS 16 was applied for all statistical analysis.
Results: The total average of WBGT was 27±2.57 °C. The maximum WBGT (28.59°C) was obtained between 3 and 4 pm. The average performance loss in jobs with power of 200, 300, 400 and 500 watts was 1.6%±0.43, 9.6±1.94, 19.65±2.68, 65.53±2.68 and 29.1±2.5 respectively. A statistically significant relationship was found between WBGT values and percentage of performance loss.
Conclusion: Outdoor workers in warm seasons with hot-dry climate experience the loss of performance, which can effect adversely on labor health and economy growth of country.
Keywords: Loss of Performance, Heat Stress, WBGT, Outdoor Works
Full-Text [PDF 465 kb]   (203 Downloads)    
Type of Study: Research | Subject: Special
Received: 2018/07/14 | Accepted: 2018/07/14 | Published: 2018/07/14
1. Kjellstrom T, Kovats RS, Lloyd SJ, Holt T, Tol RS. The direct impact of climate change on regional labor productivity. Archives of Environmental & Occupational Health. 2009;64(4):217-27. [DOI:10.1080/19338240903352776]
2. Nassiri P, Monazzam M, Golbabaei F, Dehghan S, Rafieepour A, Mortezapour A, et al. Application of Universal Thermal Climate Index (UTCI) for assessment of occupational heat stress in open-pit mines. Industrial Health ; http://doiorg/102486/indhealth2017-0018. 2017;55(5):437-43. [DOI:10.2486/indhealth.2017-0018]
3. VATANI J, GOLBABAEI F, DEHGHAN SF, YOUSEFI A. Applicability of Universal Thermal Climate Index (UTCI) in occupational heat stress assessment: a case study in Brick industries. Industrial health. 2016;54:14-9. [DOI:10.2486/indhealth.2015-0069]
4. Kjellstrom T, Gabrysch S, Lemke B, Dear K. The 'Hothaps' programme for assessing climate change impacts on occupational health and productivity: an invitation to carry out field studies. Global Health Action. 2009;2. [DOI:10.3402/gha.v2i0.2082]
5. Golbabaei F, Mazloumi A, Mahmood Khani S, Hosseini M, Abbasi M, Farhang Dehghan S. The Effects of Heat Stress on Selective Attention and Reaction Time among Workers of a Hot Industry: Application of Computerized Version of Stroop Test. Journal of Health and Safety at Work. 2015;5(1).
6. Golbabaei F, Monazzam MR, Hematjo R, Hosseini M, Dehghan SF. The Assessment of Heat Stress and Heat Strain in Pardis Petrochemical Complex, Tehran, Iran. International Journal of Occupational Hygiene. 2013;5(1):6-11.
7. Hajizadeh R GF, Dehghan SF, Beheshti MH, Jafari SM, Taheri F. Validating the Heat Stress Indices for Using In Heavy Work Activities in Hot and Dry Climates. Journal of Research in Health Sciences. 2016;16(2):90-5.
8. Mazlomi A, Golbabaei F, Dehghan SF, Abbasinia M, Khani SM, Ansari M, et al. The influence of occupational heat exposure on cognitive performance and blood level of stress hormones: A field study report. International Journal of Occupational Safety and Ergonomics; DOI: 101080/1080354820161251137. 2016;23(3):431–9. [DOI:10.1080/10803548.2016.1251137]
9. Kerslake D. The Stress of Hot EnvironmentsCambridge University Press. London; 1972.
10. MONAZZAM M, GOLBABAEI F, HEMATJO R, HOSSEINI M, NASSIRI P, FAHANG-DEHGHAN S. Evaluation of DI, WBGT, and SWreq/PHS Heat Stress Indices for Estimating the Heat Load on the Employees of a Petrochemical Industry. International Journal of Occupational Hygiene. 2014;6(1):6-10.
11. Parvari RA, Aghaei HA, Dehghan H, Khademi A, Maracy MR, Dehghan SF. The effect of fabric type of common iranian working clothes on the induced cardiac and physiological strain under heat stress. Archives of environmental & occupational health. 2015;70(5):272-8. [DOI:10.1080/19338244.2014.891965]
12. Argami SH, Poya M. Principles of Safety for Industry and Services. nd, editor. Hamedan: Fanavaran publications 2008.
13. Sharma V, Sridharan K, Pichan G, Panwar M. Influence of heat-stress induced dehydration on mental functions. Ergonomics. 1986;29(6):791-9. [DOI:10.1080/00140138608968315]
14. Hajizadeh R, Farhang Dehghan S, Mehri A, Golbabaei F, Beheshti MH. Heat Stress Assessment in Outdoor Workplaces of a Hot Arid Climate Based on Meteorological Data: A Case Study in Qom, Iran. Journal Mil Med. 2015;17(2):89-95.
15. Hajizadeh R, Golbabaei F, Monazzam M, Farhang-Dehghan S, Ezadi-Navan E. Productivity loss from occupational exposure to heat stress: A case study in Brick Workshops/Qom-Iran. International Journal of Occupational Hygiene. 2015;6(3):143-8.
16. Hajizadeh R, Dehghan S, Golbabaei F, Jafari S, Karajizadeh M. Offering a Model for Estimating Black Globe Temperature according to Meteorological Measurements. Meteorological Applications. 2017;24:303–7. [DOI:10.1002/met.1631]
17. Lin R-T, Chan C-C. Effects of heat on workers' health and productivity in Taiwan. Global Health Action. 2009;2. [DOI:10.3402/gha.v2i0.2024]
18. Kjellstrom T, Holmer I, Lemke B. Workplace heat stress, health and productivity–an increasing challenge for low and middle-income countries during climate change. Global Health Action. 2009;2. [DOI:10.3402/gha.v2i0.2047]
19. Parsons K. Heat stress standard ISO 7243 and its global application. Industrial health. 2006;44(3):368-79. [DOI:10.2486/indhealth.44.368]
20. Hübler M, Klepper G, Peterson S. Costs of climate change: the effects of rising temperatures on health and productivity in Germany. Ecological Economics. 2008;68(1):381-93. [DOI:10.1016/j.ecolecon.2008.04.010]
21. Mathee A, Oba J, Rose A. Climate change impacts on working people (the HOTHAPS initiative): findings of the South African pilot study. Global Health Action. 2010;3. [DOI:10.3402/gha.v3i0.5612]
22. Langkulsen U, Vichit-Vadakan N, Taptagaporn S. Health Impact of Climate Change on Occupational Health and Productivity in Thailand. Epidemiology. 2011;22(1):S17. [DOI:10.1097/01.ede.0000391708.62757.9a]
23. Mackworth N. Researches on the measurement of human performance. London: His Majesty's Stationery Office, 1950 Contract No.: 268.
24. Kines P. Construction workers' falls through roofs:: Fatal versus serious injuries. Journal of Safety Research. 2002;33(2):195-208. [DOI:10.1016/S0022-4375(02)00019-1]
25. American Conference of Governmental Industrial Hygienists (ACGIH®). TLVs and BEIs. Ohio: ACGIH; 2015
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Hajizadeh R, Farhang Dehghan S, Mehri A, Jafari S, Golbabaei F, Haghighat jou H. Effect of Heat Stress on Productivity Loss of Outdoor Workers: A Case Study in a Hot and Dry Climate. j.health. 2018; 9 (3) :302-313
URL: http://healthjournal.arums.ac.ir/article-1-1563-en.html

Volume 9, Issue 3 (summer 2018) Back to browse issues page
مجله سلامت و بهداشت Journal of Health
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