The Public Service Association (PSA) is taking 30 employers to court for failing to pay its workers the minimum wage for sleepovers.
The PSA was also seeking back pay for the up to six years the employers had paid for sleepovers at an unlawful rate, national secretary Richard Wagstaff told the Nelson Mail.
The cases had been filed separately with the Employment Relations Authority, Mr Wagstaff said.
The PSA wants the Government to fund the disability and community mental health sectors adequately to meet all their legal obligations to pay the minimum wage.
Last month, the Court of Appeal backed an Employment Court decision last July involving IHC subsidiary Idea Services and employee Phillip Dickson, by ruling that sleepovers were work and should be paid at the minimum wage.
The Government said it was studying the Court of Appeal decision.
NZPA