The internal inquiry, not prompted by any fresh allegations, was under way before Brittany Higgins and other complainants came forward.

Sparked by last year's ABC report into the "Canberra bubble" that questioned the behaviour of government ministers Christian Porter and Alan Tudge and their attitudes towards women, the Greens are getting input from their staff to fix any gaps in handling complaints.

Leader of the Greens in the Senate Larissa Waters met Finance Minister Simon Birmingham on Monday night as he seeks to wrap up details of an independent review on processes, culture and how to better manage complaints.

The Greens are backing Sex Discrimination Commissioner Kate Jenkins to lead the government's independent review, calling for a properly funded six-month investigation.

"There have been too many moments. This one needs to lead to change," Senator Waters said.

They want current and former staff to be heard, a complaints process, sanctions on politicians, and a new prevention culture to be developed for all people in the building.

The Greens have investigated sexual harassment complaints at the state level in the past few years, from staff and volunteers.

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