In 2021, Safe Work Australia released a model Code of Practice (CoP) for Working in Extreme Heat. The latest iteration of that code was released by the Australian Capital Territory on November 7, 2025. It is greatly expanded and much clearer on the prevention and management of exposures. When companies are claiming “best practice” safety, this CoP is particularly interesting.
As Victoria shivers in the middle of its Winter and a cop-killer runs loose in the mountains in the middle of the state, it may seem odd to think about the occupational health and safety (OHS) context of working in excessive heat. However, give us a couple of months, and it will be a hot topic again in the Southern Hemisphere. (First and last weather pun, I promise)
A recent article in The New York Times (paywalled) examined excessive heat in Spain, providing useful details on the changes being implemented—some old, some new.
One of the best articles about managing heat exposure at work is by Madi Chwasta of the Australian Broadcasting Corporation, who wrote about the Australian Open tennis tournament.
Tennis is usually played outdoors in summer, at least in Australia. The Australian Tennis Open, held in Melbourne, was heavily promoted and had a high public attendance rate. Some tennis matches are conducted in facilities with retractable roofs, but many others are held on outdoor courts with limited shade and no air conditioning.
New research into working in excessive heat concisely summarises the socioeconomic impacts but misses the obvious strategies to prevent or diminish these impacts. It also includes impacts on productivity, but heat and climate change are not in the current Australian business group discussions about productivity. Those groups could benefit from understanding Gwarda.
Coincidentally, as Europe burns and a little blog in Australia writes about the occupational context of excessive heat, a new book called Heat – Life and Death on a scorched planet was in the bookstores. Jeff Goodell, like so many North American authors, writes for his local readers even though his publishers sell books globally.
However, he does address the occupational health and safety (OHS) impacts of heat and offers some adaptations.
There seems little doubt that global warming is now a reality. It has been forecast since the 1970s at least, but the fact of creeping change needs a turning point, and it seems that the current Northern Hemisphere Summer is that point. The Southern Hemisphere’s turn is only a few months away.
Few are talking about prevention. Instead, it is adaptation. Those adaptations need to be more than interventions at the individual level, such as increased hydration, wide-brimmed hats and facekinis. Global warming (climate change) has been a developing hazard for a while, contributed to by most countries and owned by none. Employees and customers need to reassess their work-related expectations. Here are some occupational issues and controls that deserve active reflection.
Global warming is affecting how we work just as much as how we live. Working in Heat policies are designed based on experience rather than meteorological and climate forecasts, meaning these documents are always chasing reality and not getting ahead of the occupational hazard.
On January 19, 2023, Steven Greenhouse (coincidental name) looked at the topic of working in extreme for Nieman Reports writing that:
“High heat can be a big problem for the nation’s workers, not just farmworkers and construction workers, but delivery workers, utility workers, landscaping workers, and warehouse workers.”
