Emergency services attended a workplace incident in Werribee South on 11 July.
It’s believed a man was doing maintenance work on the trailer of a truck when he was struck by the vehicle at a worksite on Diggers Road just before 1pm.
The 29-year-old man was airlifted to hospital with serious injuries but has since died.
Worksafe have been notified and will be investigating. Police will prepare a report for the coroner.