Man dies after Sydney building site fall

A 38-year-old man has died after falling at a construction site in western Sydney.

Emergency services attended the Jordan Springs site after midday on Wednesday, NSW Police said in a statement.

The man fell from at least four storeys, and police and SafeWork NSW are investigating.

The man fell down a 30 metre ventilation shaft, the Daily Telegraph reported on Wednesday.

"The guy was working on the roof to remove building material which was immediately adjacent to the shaft roof," a colleague who saw the incident told the Telegraph.

"He then tripped over and has fallen down the shaft."

Seven News video from the scene shows workers on the roof and also in front of the multi-storey waterside development on Jubilee Drive.

Building materials and a stretcher can also be seen on the roof.