Greens co-leader Chlöe Swarbrick says it's unclear what path the party will take if Darleen Tana won't resign from Parliament.

The party was handed a report on Tana's knowledge of alleged migrant exploitation at her husband's business on Friday.

She's resigned from the party, and the caucus has unanimously requested she also quit Parliament.

Tana's released a statement saying she does not accept the report's findings.

Swarbrick says things are still up in the air.

"Were Darleen to put us in the position where she was not to resign as a member of Parliament, then of course we would have to go back to having some sort of discussion about what comes next." 

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