The Paid Parental Leave Bill vetoed by then-Finance Minister Bill English last year will be one of the first things through under the new Government.
Labour's raising a new parent's leave entitlement from 18 to 22 weeks in July next year, and to 26 from July 2020.
It will introduce the legislation to pass that as soon as the House resumes this week.
Former Labour MP, Sue Moroney wrote the Bill, and said it's something the Labour caucus has always been strong in support of.
"It's already been through a proper Select Committee process twice and I can't think of any other Bill that has had the amount of scrutiny on it that this one has, so it's the perfect one for the government to start off with."
She said it was an unprecedented move by National to cut her Bill down.
"After all of the processes that we've gone through in Parliament proved that it was the right thing to do and the best thing to do to support families.
LISTEN ABOVE AS SUE MORONEY SPEAKS WITH MIKE HOSKING