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Risk Assessment

Workplace Heat Risk Assessment: A Step-by-Step Framework

A good heat risk assessment is specific, repeatable, and produces an action list. This framework walks through how to assess your workplace systematically — and how WorkplaceReady automates most of it for you.

9 min read Updated June 12, 2026

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  1. Step 1: Inventory exposures
  2. Step 2: Quantify the heat environment
  3. Step 3: Score risk by role
  4. Step 4: Map controls to risks
  5. Step 5: Document and review annually

Step 1: Inventory exposures

List every role and task that involves heat exposure — indoor and outdoor. Note typical duration, time of day, and clothing requirements. This is the foundation everything else builds on.

Step 2: Quantify the heat environment

Use heat index or WBGT measurements for each exposure. A single thermostat reading is not enough — measure where the work actually happens.

Step 3: Score risk by role

Combine exposure, intensity, and individual factors into a simple risk score per role. High-risk roles trigger mandatory controls; medium-risk roles need monitored controls.

Step 4: Map controls to risks

For each risk level, define required controls: hydration access, work/rest cycles, acclimatization, supervisor checks, and emergency procedures.

Step 5: Document and review annually

Record the assessment, share with workers, and re-run at least annually — or sooner when work, sites, or weather patterns change.

Frequently asked questions

How often should a heat risk assessment be updated?
At minimum annually, and any time work, sites, equipment, or local climate patterns change materially.
Can I do a heat risk assessment without specialist tools?
Yes — a structured questionnaire and a basic heat index reference are sufficient for most small businesses. WorkplaceReady automates this end-to-end.

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