With hot weather affecting much of the country lately, it’s important to take extra precautions when working on construction sites over summer. Long hours outdoors, physical labour and exposure to direct sunlight can significantly increase the risk of dehydration, heat stress and fatigue. These are conditions that can all have long-term consequences for health and wellbeing if not properly managed. In extreme cases, prolonged heat exposure can also lead to reduced concentration, slower reaction times and an increased risk of workplace incidents.

So, how can construction workers protect themselves from the heat while still working safely and effectively?

Ensure you have enough to drink

Working in summer heat can lead to rapid dehydration, which poses serious risks for construction workers. Even mild dehydration can affect physical performance and decision-making on site.
It’s recommended that men drink around 2.6 litres of water per day and women 2.1 litres. However, this can rise to at least 4 litres per day when working outdoors in hot conditions, particularly during physically demanding tasks or prolonged shifts.

It’s important to make sure you and your colleagues bring enough water to work each day. Where possible, supervisors should provide cool drinking water on site to make hydration as simple as possible. To help make hydration a priority, schedule regular water breaks throughout the day, rather than waiting until you feel thirsty.

Be wary of consuming too many sugary or caffeinated drinks, as these can actually increase the risk of dehydration.

Adjust work hours if possible

Labour-intensive or outdoor activities should be scheduled during cooler parts of the day, where possible, to reduce the risk of heat stress. Early starts, split shifts or rescheduling physically demanding tasks to the morning can help limit prolonged exposure to extreme heat. Where work must continue during hotter periods, incorporating additional rest breaks and rotating tasks can assist in managing fatigue and maintaining safe work practices.

Practice sun protection

Make sure you are equipped with appropriate sun protection when working outdoors on hot days. This includes:
• Sunscreen: Broad-spectrum SPF 30+ or higher. Choose a non-greasy formula and reapply every couple of hours.
• Protective eyewear: Safety glasses or wrap-around sunglasses that meet Australian standards.
• Head protection: A wide-brimmed hat or helmet with a brim attachment to shield the face, neck and ears from direct sunlight.

Dress for the heat

Choosing the right clothing will help protect you from the sun while also keeping you comfortable when working in hot conditions. Opt for lightweight, moisture-wicking and breathable clothing that helps keep you cool and is UPF rated. Ventilated fabrics can increase airflow and reduce heat build-up, helping to regulate body temperature throughout the day.

Know the signs of heat-related illness

When working outdoors in summer, it’s important to recognise the signs of heat-related illness so you can take action early. Symptoms of heat stress and heatstroke can include:

• Excessive sweating or no sweating at all
• Nausea and dizziness
• Rapid pulse and confusion

Make sure to check in with your colleagues throughout the day and familiarise yourself with the steps to take if someone shows signs of heat-related illness. Early intervention can prevent serious injury and may save lives.

Working safely in hot conditions is part of doing the job well on any construction site. Being aware of risks, following safety practices and looking after yourself and others are qualities valued across the industry.

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Article References

Skyrme, A (27 January 2024) ‘7 Summer Safety Tips for Construction Sites’, Your Group, accessed 30 January 2026.