Australia is no stranger to extreme heat, but as heatwaves grip multiple states, construction workers face some of the toughest conditions on the job.
With the mercury soaring as high as 40°C in regions across South Australia, Victoria Tasmania and NSW this week, the combination of heavy labour, direct sun exposure, and relentless heat puts tradies at serious risk of dehydration, heat stress, and fatigue.
SafeWork SA is urging employers to take action to protect outdoor workers as temperatures continue to rise.
While there’s no official “stop work” temperature under Australian law, businesses must still ensure a safe working environment. That means adapting work schedules, providing shade and hydration, and educating workers on heat safety.
SafeWork SA Executive Director Glenn Farrell stressed the importance of proactive measures, saying:
“Employers and business operators have a duty of care to protect staff and contractors from extreme heat. Employers are advised to educate their workplaces about how to minimise risks at work during heatwaves and to provide resources and information to prepare staff for working in the heat.”
So, what can be done to keep construction workers safe when the heat is on?
Heatwave survival safety tips
With temperatures pushing into the high 30s and 40s across multiple states, it’s essential for both workers and employers to take precautions. Here are the top safety measures recommended by SafeWork SA:
Stay hydrated—It’s non-negotiable
Construction work is physically demanding, and sweating under extreme heat leads to rapid dehydration. Workers should drink plenty of water throughout the day, even before they feel thirsty. Employers should ensure there’s a ready supply of cool, clean drinking water on-site.
Cover up to cool down
It might seem counterintuitive, but covering up can actually help keep workers cool. Loose-fitting, long-sleeved shirts and lightweight pants protect the skin from harmful UV rays while allowing airflow.
Sunscreen should also be applied regularly, and wide-brimmed hats or hard hats with neck flaps offer extra protection.
Shade and rest breaks are a must
SafeWork SA advises construction sites to allow additional rest breaks in the shade to prevent overheating. Where natural shade isn’t available, employers should provide temporary shade structures or cooling areas.
Work smarter, not harder
Adjusting the work schedule to avoid the hottest parts of the day can make a huge difference. Strenuous tasks should be done early in the morning or later in the afternoon, when temperatures are lower.
Acclimatise to the heat
If workers are not used to extreme temperatures, they need time to adjust. SafeWork SA recommends gradually increasing exposure to heat over several days to allow the body to adapt.
Watch for the warning signs
Heat stress and exhaustion can creep up quickly. Workers should look out for symptoms such as dizziness, nausea, excessive sweating, or confusion—these can be signs of heat-related illness that require immediate attention.
Respecting workers in extreme heat
While employers have a legal responsibility to keep their workers safe, SafeWork SA is also calling on the public to be mindful of those working in extreme heat. Whether it’s road workers, builders, or delivery drivers, people should show patience and understanding as they work through scorching conditions.
“Apart from the obvious risks of dehydration and heat stress, heat-induced fatigue can be a serious safety issue for those operating heavy plant and equipment,” said Farrell.
Australia’s summers are getting hotter, and heatwaves are becoming more frequent and severe. The best way to keep workers safe is to plan ahead, provide the right resources, and listen to what the body is telling you.
For those working in construction, staying cool isn’t just about comfort—it’s about survival.
