The Prime Minister says the Government has not handled changes to Oranga Tamariki contracts well

A children's charity is suing the Ministry for allegedly cancelling a 21-million-dollar contract - which still has two-and-a-half years to run.

Stand Tu Maia says losing funding will end the service, which has a one hundred-year history of providing trauma care for children and whanau.

Chris Luxon says the organisation has done some great work.

He says the matter is before the court so he can't comment much - but he has raised the issue with the Children's Minister this week.