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CIB Conferences

Abstract

This paper investigates the impact of climate-induced heat stress on the health, safety and physical performance of outdoor construction workers in Gqeberha, South Africa. Rising temperatures associated with climate change have increased workers’ exposure to extreme heat, thereby elevating the risk of heat-related illnesses, reduced productivity and occupational accidents. The study addresses limited region-specific empirical evidence on occupational heat stress in the Eastern Cape. The study adopted a quantitative research approach within a positivist paradigm, employing a cross-sectional survey design. The primary data was collected using structured questionnaires administered to outdoor construction workers on residential, active construction sites in Gqeberha. A total of 32 questionnaires were distributed to a convenience sample of workers involved in three residential projects during outdoor construction activities – bricklaying & painting. The response rate was 100%. Descriptive statistical analysis was used to examine the prevalence of heat-related illnesses, changes in worker productivity, and the occurrence of heat-related site accidents. The findings indicate that climate-induced heat stress poses occupational hazards for construction workers. Participants reported fatigue, dehydration, reduced concentration, and decreased productivity during hot conditions, as well as the likelihood of safety incidents linked to heat-induced physical and cognitive strain. The study revealed insufficient implementation of heat-stress management measures on construction sites. The study highlighted the need for proactive heat-stress management in construction, including structured work–rest schedules, improved hydration protocols, provision of shade, workers’ heat stress training, and integration of heat risk into daily health and safety (H&S) planning.

Keywords

Climate-induced Heat Stress, Heat-related Illnesses, Health and Safety, Construction Workers, Performance

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