When I worked at the local city council, there was a work health and safety rule for the outdoor workers e.g. road workers, parks and gardens workers etc, that if the temperature reached 40 degrees Celsius which is approximately 104 degrees Fahrenheit they were told to work indoors at the workshop. Most of Australia has high temperatures at some time during the summer so we have a higher temperature tolerance. The tolerance for temperatures in places like the UK is at a lower threshold around 30 deg C (approx 90 deg F) which to most Aussies except perhaps in Tasmania would be considered to be a lovely summer day. It makes a difference for the level when heat stress kicks in, and it helps Aussies to be more aware of the dangers of heat stress. On the other side of the coin, I would be extremely unprepared for the cold temperatures which are normal in the UK.
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