Several recent polls have put the Maori Party in the position of kingmaker if it can hold two or three electorate seats.
Asked if he would be happy to work with the Maori Party, Labour leader David Cunliffe said it was a post-election decision.
"I have not closed my door to an approach from the Maori Party, but I'm not going to be having negotiations before the election."
He said Labour intended to contest all the Maori electorates and, as yet, had no plans to do a deal with Mana leader Hone Harawira to help him hold his seat while increasing Labour's chances of winning others back.
"There's no prospect of that at this stage," Mr Cunliffe said.
Labour's Maori affairs spokesman, Shane Jones, said the party's target was to win all seven Maori electorates - and he did not believe the Maori Party would side with Labour, saying Mr Flavell "can't be trusted" after six years at National's side.
Prime Minister John Key dismissed the Maori Party's comments as election-year positioning and did not believe it was a sign the party was dissatisfied with National.
"Every small party in the history of MMP has struggled under the cloak of the major parties, so coming into election year, they do tend to distance themselves a bit."