NSW premier Baird can't be treasurer too

NSW's new premier Mike Baird says he will not stay on as treasurer in the cabinet reshuffle.

"I need to get on with the job with providing the leadership across the key policy areas in the key electorates across the state," Mr Baird told Macquarie Radio on Monday.

"And that, certainly from my point of view, won't allow me to be treasurer."

Mr Baird is expected to announce his new cabinet this week and is giving nothing away about the likely winners and losers.

But he says he will take on the title of Minister for Western Sydney, a role his predecessor Barry O'Farrell created after the 2011 state election.

Mr Baird says the area is an economic powerhouse, highlighting the North West and South West rail links as major achievements.

On his fourth day as premier, Mr Baird is heading out to Sydney's west to make an announcement about the South West link.

Mr Baird, who served as treasurer in the O'Farrell government, was elected Liberal leader unopposed last Thursday.

Gladys Berejiklian was elected deputy Liberal leader by the party room.