A forklift driver has been charged with manslaughter after an investigation into a fatal workplace incident in Sydney's west last year.

Emergency services were called on February 1, 2021, to a St Marys business following reports a man had been pinned between a truck and forklift.

The 40-year-old man died at the scene.

NSW Police have issued a 59-year-old man with a court attendance notice for the offence of manslaughter.

Police will allege in court the man was operating the forklift prior to the incident.

He will appear at Penrith Local Court on Tuesday.

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