The life of an 18-year-old apprentice has been tragically cut short after a truck was understood to have collapsed at a mechanical workshop in Brocklehurst on Wednesday.
NSW Ambulance Inspector Adam Parker said paramedics arrived at the scene within minutes after they got a call for help about 12.40pm.
Paramedics performed CPR for more than 20 minutes after the young man suffered a traumatic cardiac arrest, Inspector Parker said.
"Despite the best efforts of paramedics and his workmates, the young man tragically died," he told Australian Community Media.
"These types of jobs are difficult for both the families of the patient and paramedics.
"NSW Ambulance chaplain arrived on scene to provide emotional support for the family who attended the worksite.
"We urged all workplaces to ensure the safety of themselves and those around them while working on a worksite."
A spokeswoman for the workplace safety regulator, Safe Work NSW, confirmed the man who died was an apprentice.
"Initial enquiries indicate the worker died when the elevated cab of a truck collapsed," the spokeswoman said.
"Investigations are ongoing," she said.
A NSW Police spokeswoman said a report would be prepared for the Coroner.