A construction worker who fell several storeys to his death at a building site in Sydney's west on Wednesday, in what's been described as an "avoidable" tragedy, has been identified as 38-year-old Mohamad Riche.

Emergency services were called to the site on Jubilee Drive at Jordan Springs, near Penrith, just after midday, to reports a man had fallen from the fifth storey of a construction site.

Mr Riche is understood to have fallen down a shaft from the rooftop where he had been working.

Specialist rescue paramedics had been called to assist with the operation, a NSW Ambulance spokesperson said, but Mr Riche unfortunately died at the scene.