Safety checklist — Hot weather work
Prevention of heat stroke on site. Compliant with Québec's Construction Safety Code (CSTC) and CNESST standards.
Before the workday
11 items- ✓
Humidex / corrected temperature checked (CNESST tool)
- ✓
Fresh drinking water in sufficient quantity on site
- ✓
Shade area or shelter available for breaks
- ✓
Strenuous tasks scheduled for cooler hours (early morning)
- ✓
Team informed of heat stroke symptoms
- ✓
First aid kit accessible
- ✓
Drink 250 ml water every 20 min (max 1.5 L/h)
ℹ️ At 41.7°C+: drink 250 ml every 10 min (max 1.5 L/h)
- ✓
Shade breaks per CNESST work-rest schedule
- ✓
Buddy system — mutual monitoring between colleagues
- ✓
Light, pale, breathable clothing under PPE
- ✓
Watch for signs: cramps, dizziness, unusual fatigue
End of heat period
3 items- ✓
Any discomfort reported and documented
- ✓
If confusion, loss of balance or consciousness: call 911
- ✓
Affected person moved to shade and cooled while awaiting help