Managing Heat Risks on Site

Understanding Heat Risks

Working in high temperatures and direct sunlight increases the risk of:

• Heat stress and dehydration
• Fatigue and reduced concentration
• Sunburn and UV-related skin damage
• Eye strain and reduced visibility
• Slower reaction times and poor decision-making

These risks can impact worker wellbeing, site productivity, and overall workplace safety if not properly managed. Heat-related illnesses can develop quickly, particularly during physically demanding tasks or long periods of sun exposure.

Managing Heat Risks on Site

PPE and Sun Protection

Workers should wear suitable PPE and sun protection appropriate for hot conditions. PPE should meet relevant Australian Standards and be suitable for the work environment.

Recommended protection includes:

• Broad-brimmed hard hat attachments or hats
• Lightweight long-sleeved shirts and long pants
• Wrap-around safety sunglasses
• Broad-spectrum sunscreen

Supervisors should ensure workers understand site expectations and are consistently following heat protection requirements.

Hydration and Rest Breaks

Hydration plays a critical role in maintaining concentration, energy levels, and safe performance on site.

Workers should:

• Have easy access to clean drinking water
• Drink water regularly throughout the shift, not just when thirsty
• Use electrolytes where appropriate during prolonged heat exposure or heavy physical work

Where possible, work should also be planned to reduce unnecessary exposure to direct sunlight by:

• Providing shaded or ventilated rest areas
• Scheduling regular breaks
• Rotating high-exposure tasks
• Completing physically demanding work during cooler parts of the day where practical

Recognising Heat Stress

Workers and supervisors must understand the early signs of heat stress and dehydration, including:

• Dizziness or headaches
• Nausea
• Excessive sweating
• Fatigue or weakness
• Rapid heartbeat
• Confusion or unusual behaviour

Any worker showing signs of heat-related illness should stop work immediately, move to a cool area, hydrate, and report the issue to their supervisor.

Workers should not return to high-risk tasks, such as operating machinery or working at heights, until they have fully recovered.

Key Takeaways

• Heat exposure increases the risk of dehydration, heat stress, fatigue, and reduced concentration.
• Proper hydration, PPE, breaks, and planning are critical for working safely in hot conditions.
• Workers and supervisors must recognise and respond to early signs of heat-related illness.
• Managing heat risks helps prevent incidents, injuries, and poor decision-making on site.

Quick Quiz

1. What are common signs of heat stress?
2. Why are hydration and rest breaks important in hot conditions?
3. What PPE helps reduce heat and UV exposure?
4. What should you do if a worker begins showing signs of heat illness?

Safety reminder: Heat stress can develop quickly and affect concentration, judgement, and reaction times. Stay hydrated, take breaks, and report symptoms early to prevent serious incidents.