A total fire ban has been declared for the entire state tomorrow, with high to extreme fire danger predicted in all districts.
The Bureau of Meteorology has also issued a heatwave warning for the majority of forecast districts, with maximum temperatures in the low to high-40s expected across Victoria tomorrow.
Severe to extreme heatwave conditions are expected to persist across parts of the state for an extended period, until a cooler change arrives towards the end of next weekend.
Locations likely to be impacted include Albury-Wodonga, Bendigo, Ballarat, Horsham, Mildura, Maryborough, Shepparton, Seymour, Swan Hill and Wangaratta.
WorkSafe Chief Health and Safety Officer Sam Jenkin said employers must prepare for the conditions and make any accommodations needed to ensure tasks are carried out safely or where necessary, postponed.
"Working in severe or extreme heat can easily lead to dehydration and heat illnesses such as heat rash, fainting, heat exhaustion and heat stroke - which is a life-threatening condition," Mr Jenkin said.
"It is imperative employers plan ahead and take all reasonable steps to protect their workers, particularly those exposed to the elements or working in spaces without ventilation or air conditioning."
Victorian employers have a duty to monitor the conditions of their individual workplaces and manage any risks to health and safety, including those created by extreme weather.
This can include providing workers with cold water, sun protection and appropriate clothing; using air conditioning and blinds indoors; providing shade and rest spots outdoors; regularly monitoring the temperature; and ensuring workers know how to spot heat illness symptoms in themselves and others.
Mr Jenkin said employers may also need to relocate workers and postpone or reschedule certain tasks for when conditions improve.
"Where there is high risk of fire, employers must ensure they are not carrying out any work activities that may provide an ignition source, such as welding or other hot works," he said.
"Farmers and primary producers in affected areas should also consider implementing their bushfire emergency plans and reconsider the use of machinery near combustible material if the work is not essential."
To stay up-to-date with the latest information use the VicEmergency App or website.
