The Labour Party is set to celebrate turning 100 this week and is staging a series of events.
A new history of the party will be launched in Wellington on Thursday and a special conference will be held on Saturday followed by a waterfront birthday bash.
Party leader Andrew Little will speak at the conference before it goes into closed session to work on changes to the way the party selects its list candidates.
The following day Mr Little will be at centenary events in Auckland.
He will speak at a meeting in the city, with a major policy announcement expected.