09/04/2026
Heat Stress...
Well, spring and summer are on the way (hopefully! 🤞), and that means many of us start thinking about heat stress and dehydration.
But here’s the thing — it’s not just outdoor work that can expose employees to dangerous heat conditions. Indoor environments like warehouses, boiler rooms, and confined spaces can be just as risky, especially when heavy PPE, high workloads, or poor ventilation are involved.
Heat stress isn’t just uncomfortable — it impacts both the body and the brain. Even mild dehydration can slow reaction time and reduce focus.
At higher levels, it can be comparable to working under the influence.
And here’s a crucial point: water alone isn’t enough. Sweat removes essential electrolytes like sodium and potassium, and replacing only fluid can create additional risk during long or intense work.
So who’s most at risk?
👉 Heavy industrial & manufacturing: Furnace operators, welders, maintenance crews
👉 Construction & civil engineering: Concrete crews, roofers, road crews
👉 Agriculture & outdoor labor: Farm workers, landscapers, forestry teams
👉 Warehousing & logistics: Pickers, packers, forklift operators
👉 Emergency services: Firefighters, hazmat teams
👉 Utilities & field services: Line workers, oil & gas crews, telecom engineers
👉 Confined space work: Tank cleaners, vessel welders, inspectors
👉 New, temporary, or contract workers: Less acclimatised and less familiar with site controls.
What actually works to prevent heat-related incidents?
1. Structured acclimatisation programs for new or returning workers
2. Easy access to water and electrolyte replacement at the point of work
3. Enforceable work-rest cycles based on real conditions
4. Supervisor and peer monitoring to catch early signs of heat strain
5. A culture where workers feel safe speaking up before symptoms escalate
Most serious heat incidents aren’t surprises — they’re predictable. They happen when production pressure overrides controls, when breaks are skipped, or when symptoms are hidden.
Treat heat stress like any other workplace hazard: assess it, control it, supervise it, and re-evaluate as conditions change.
Doing it right means fewer medical emergencies, more consistent performance, and safer, healthier teams.