A 34-year-old man was crushed while working on a tipper truck at his Lilydale home on Sunday.
It is believed the man was working on the chassis of the truck with the cargo bin raised when it fell on top of him.
On Friday, a 60-year-old farmer died after his tractor rolled on a property at Myrniong, near Bacchus Marsh.
It is believed the man was slashing on uneven ground when the incident occurred.
WorkSafe is investigating both incidents.
The fatalities bring the number of workplace deaths this year to 42, which is two more than at the same time last year.
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