They set up with their kids outside the Crown St officer and staged a "play-in". And while their numbers may have been small their message was clear that action on climate change, for the sake of the next generations, was overdue.

Earlier that day federal Labor announced its target was for net zero emissions by the year 2050.

Melissa Bungcaras, there with kids Sebastian, 4, and Giselle, 2, said Labor's position needed to be brought forward.

"To stay under 1.5 degrees of global warning we need to have far more urgent and far more drastic action on these emissions targets," she said.

"We've seen this summer what's happened with the bushfires in our region and it's not a future we think our kids deserve.

"We're asking Sharon Bird to take a conscience vote on the climate change bill Zali Steggall is about to introduce next week."

Ms Bird said this would not happen.

"We'd only have conscience votes on issues that are considered moral issues," she said. "This is a straightforward policy issue.

"What we have committed to are the principles behind which we will take a full policy to the next election."