WorkSafe is investigating the work-related death of a 63-year-old truck driver at a workplace in Wootatting, near York, on Tuesday.
The man was believed to have been performing repair or maintenance work on a truck in a workshop when he was caught between the wheel arch and the tyre.
Inspectors travelled to the site on Tuesday night and continue to examine the circumstances of the incident.
WorkSafe WA commissioner Darren Kavanagh said any work-related death was a tragedy, and relayed his sincere condolences to the man's family.
"Worksafe thoroughly investigates serious work-related injuries and deaths in WA with a view to preventing future incidents of a similar nature," he said.