Another 690 jobs will be cut from RailCorp in the latest changes to Sydney's train system.
But the cuts will not affect drivers, guards or station staff, the transport minister, Gladys Berejiklian, said at a press conference on Friday morning.
From July next year, RailCorp will be dissolved and replaced by two new organisations, Sydney Trains and NSW Trains.
Ms Berejiklian said 240 positions will be cut as a result of the new organisations - about half from middle management and half from other parts of the organisation.
The cuts come on top of 750 middle management redundancies already announced.
Another 450 maintainence positions, of 4700, will be cut in the next three years.
Ms Berejiklian said the number of station staff on the network today would be retained.
But she said more station staff would be on platforms and not behind desks preparing paperwork.
"Every station that has staff will have the same staff from 1 July," she said.