Ms Ardern last week named the Labour MPs who would become ministers, but not their portfolios.
Under its coalition deal with Labour, New Zealand First has been allocated 13 portfolios among four ministers, including regional development, defence, infrastructure and forestry.
Look back on developments with RNZ's blog:
Watch: NZ First on ministerial announcements
Earlier, Green Party leader James Shaw spoke to the media:
Jacinda Ardern reveals her government's new ministerial line-up
Portfolios will play to ministers' strengths, with Greens taking an environmental focus and NZ First overseeing the regions, incoming PM Jacinda Ardern tells Morning Report. Video
The Green Party has announced the four people who will get government roles in the new adminstration.
Incoming Prime Minister Jacinda Ardern says she's not happy with the gender balance of Labour's ministerial positions, and has vowed to change it over time. Video
New Zealand has a new Labour-led government in a coalition with New Zealand First and supported by the Greens.
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