Emergency services were called to the industrial site at Port Kembla, south of Wollongong, shortly after 2pm on Wednesday following the reports of the accident.
“Despite the efforts of emergency services, the man died,” NSW Police said in a statement.
“The body, which has not yet been formally identified, is believed to be that of a 59-year-old man.”
The Illawarra Mercury reports the victim had been involved in maintenance work at the site.
Nine reports he was pinned between a crane and a ute.
Inquiries continue and a report will be prepared for the coroner.