The accident happened around 9:30 p.m. Wednesday at the UPS facility located on E Oregon Avenue.
According to police, the mechanic was working under a truck making repairs when the lift gave way. He was pronounced dead at the scene.
The victim's identity has not been released, but co-workers say he was a long-time employee in his 50's.
Philadelphia police say the investigation is ongoing. OSHA was called to the scene to investigate the accident.
