Evaluation of Heat Stress on Bakery Worker in Makurdi Benue State, north east Nigeria.


  • Sampson Chisa Owhor
  • Amine J D
  • Orafa Patience Nguseer




Bakery workers, Heat exposure, Heat stress, Oven, Temperature index, Wet bulb globe


Nigeria being a tropical nation with high temperature and some Nigerian bakeries use mud oven which expose workers to direct contact with heat increasing their risk of heat stress. This research work tends to evaluate heat stress on bakery workers in Makurdi, Benue State. Forty questionnaires were validly filled and handed in from the workers at the various bakeries.  Data such as age, duration of exposure as well as heat stress estimation and satisfaction level were filled in and data were analysis using statistics and results shows that heat stress reduces efficiency and productivity in workers poses health risk in workers such as heat cramps, heat rashes and in severe cases even heat stroke which may threaten the life of these workers. The results from measurements in this work has shown that bakery workers in Makurdi metropolis are highly exposed to heat stress and are likely to experience one disorder or the other with possible death consequences.  It was also found that heat stress is often an overlooked problem as most workers lacked proper knowledge of control measures and employers have made little or no effort to prevent heat stress disorders.

Author Biographies

Sampson Chisa Owhor

Department of Mechanical Engineering
Federal University Wukari
Taraba state, Nigeria

Amine J D

Department of Mechanical Engineering
Federal University of Agriculture Makurdi
Benue State, Nigeria

Orafa Patience Nguseer

Department of Food Science and Technology
Federal University Wukari
Taraba state, Nigeria,


Yossif HA, Abd Elaal EM. (2012). Occupational hazards: Prevention of health problems among bakery workers in Benha City. J Am Sci; Vol.8, pp: 99‑108.

Dong XS, West GH, Holloway-Beth A, Wang X, Sokas RK. (2019). Heat-related deaths among construction workers in the United States. Am J Ind Med.;62(12):1047- 1057.

UNDP. (2016). Climate Change and Labor: Impacts of Heat in the Workplace. United Nations Development Programme

Parsons K. (2014). Human Thermal Environments: The Effects of Hot, Moderate, and Cold Environments on Human Health, Comfort, and Performance. CRC press

Kjellstrom T. (2016). Impact of climate conditions on occupational health and related economic losses: a new feature of global and urban health in the context of climate change. Asia Pac J Public Health.;28(2 Suppl):28s-37s.

Kjellstrom T, Lemke B, Otto M, Hyatt O, Dear K. (2014). Occupational Heat Stress: Contribution to WHO Project on “Global Assessment of the Health Impacts of Climate Change”, Mapua: Health and Environment International Trust

Arbury S, Jacklitsch B, Farquah O, (2014). Heat illness and death among workers – United States, 2012–2013. MMWR Morb Mortal Wkly Rep.;63(31):661-680.

Occupational Health and Safety Administration. (2020). Overview: working in Outdoor and Indoor Heat Environments. Heat.Updated 2020. Accessed January 21, 2021. https://www. osha.gov/SLTC/heatstress/

Xiang J, Bi P, Pisaniello D, Hansen A. (2014). Health impacts of workplace heat exposure: an epidemiological review. Ind Health.;52:91-101.

Center for Disease Control and Prevention, National Institute for Occupational Safety and Health. Heat stress: workplace safety and health topics [Internet]. Updated 2018.Accessed January 15, 2020. https://www.cdc.gov/niosh/topics/heatstress/

Vega-Arroyo AJ, Mitchell DC, Castro JR, (2019). Impacts of weather, work rate, hydration, and clothing in heatrelated illness in California farmworkers. Am J Ind Med.;62(12):1038-1046.

Huss RG, Skelton SB, Alvis KL, Shane LA. (2013). Heat stress management program improving worker health and operational effectiveness: a case study. Workplace Health Safety;61(3):128-133.

Kjellstrom T, Lemke B, Lee J. (2019). Workplace heat: an increasing threat to occupational health and productivity. Am J Ind Med.;62(12):1076-1078.

Lucchini RG, London L. (2014). Global occupational health: current challenges and the need for urgent action. Ann Glob Health.;80(4):251-256.

Stobnicka A, Gorny RL. (2015). Exposure to flour dust in the occupational environment. Int J Occup Saf Ergon.;21(3): 241-249.

Baleshti MH. (2015). Evaluating the potential risk of musculoskeletal disorders among bakers according to LUBA and ACGIH-HAL indices. J Occup Heal Epidemiol.;3(2):72-80.

Deveci M, Kulahci Y, Bozkurt M, Sengezer M. (2002). Unusual type of burn injury caused by industrial bakery ovens. Burns.;28(2):201-204.

Afshari D, Moradi S, Ahmadi Angali K, Shirali G-A. (2019). Estimation of heat stress and maximum acceptable work time based on physiological and environmental response in hot-dry climate: a case study in traditional bakers. Int J Occup Environ Med.;10(4):194-202.




How to Cite

Owhor, S. C., J D, A., & Nguseer, O. P. (2021). Evaluation of Heat Stress on Bakery Worker in Makurdi Benue State, north east Nigeria. American Journal of Agricultural Science, Engineering and Technology, 5(2), 26–39. https://doi.org/10.54536/ajaset.v5i2.72