Labour leader Andrew Little has announced a minor reshuffle in his caucus following the election of Jacinda Ardern as his deputy.
Dunedin North MP David Clark has been given the important health portfolio, taking over from Annette King who resigned as deputy leader and opened the door for Ms Ardern.
Ms King's new job is state services spokeswoman.
She isn't standing for re-election in the September election.
Stuart Nash takes over Dr Clark's economic development portfolio, with David Parker picking up Trade and Export.
Ms Ardern was unanimously elected deputy leader at a caucus meeting on Tuesday.
Another change Mr Little has made is to give Megan Woods Mr Nash's energy, innovation, science and research portfolios.
Ms Woods keeps her climate change and Canterbury issues portfolios.
No changes were announced in Ms Ardern's responsibilities.
She currently holds the justice, culture and heritage, children and small business portfolios.