Shadow treasurer Michael Daley is NSW Labor's new deputy leader.
The position was left empty last week after Linda Burney vacated the spot to make the switch to federal politics.
Mr Daley, who's the member for Maroubra, was unanimously voted in as her replacement at a Labor caucus meeting in Sydney on Monday.
"I'm very grateful to have received the unanimous support of my colleagues this afternoon and it's an honour and a privilege to take up the role of deputy leader," Mr Daley said at a joint press conference with Opposition Leader Luke Foley.
He said he was looking forward to working closely with Mr Foley, to further scrutinise the Baird government.
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Daley's promotion means the top two positions in the NSW Labor party will now be held by men.
That's despite Labor's recent pledge to boost the number of senior women in the party which came in the fallout of the former NSW Labor general secretary Jamie Clement's sexual harassment scandal.
Mr Foley said he would promote more women once Ms Burney left parliament.
"Labor has far more women than the Liberals do in the parliament, on the frontbench and in senior roles," he said.
"So I won't be taking any lectures from Mr Baird and his colleagues about the advancement of women in this parliament because it's all happening on the Labor side."
Ms Burney is seeking Labor preselection in the federal seat of Barton.
If successful, she will become the first indigenous woman to be elected to the House of Representatives.
