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  3. Heat stress
Topic

Heat stress

Keep crews safe in the heat with hourly WBGT checks, water, shade and acclimatisation.

Key points

  • Check the WBGT every hour. The reading decides the water, rest and shade you give.
  • New and returning workers need at least 7 days to get used to the heat.
  • At WBGT 32°C and above, heavy work needs a 10-minute shaded break every hour.
  • Confusion or collapse in the heat is heat stroke. Cool the worker and call 995.
Know itHeat stress: what supervisors need to knowManage heat stress on site: MOM WBGT bands, hourly checks, water, shaded rest, acclimatisation, spotting heat stroke and the rules from December 2026.Read the guide → Check itHeat stress checklistDaily heat stress checklist for outdoor and hot work: WBGT readings, water, shaded rest, acclimatisation, buddy system and emergency cooling kit.Open the checklist → Brief itToolbox talk: heat stressA five-minute toolbox talk on heat stress for outdoor crews: drink every hour, rest in the shade, watch your buddy and act fast on heat stroke.Use the toolbox talk →

All heat stress resources

Guide

Heat stress: what supervisors need to know

Nurul Hidayah Binte Azman · Oct 20, 2026
Checklist

Heat stress checklist

Nurul Hidayah Binte Azman · Oct 20, 2026
Toolbox talk

Toolbox talk: drinking water and rest breaks

Nurul Hidayah Binte Azman · Oct 20, 2026
Toolbox talk

Toolbox talk: sun and UV protection

Nurul Hidayah Binte Azman · Oct 20, 2026
Toolbox talk

Toolbox talk: heat stress

Nurul Hidayah Binte Azman · Oct 20, 2026

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