"This claim, raised under the process recommended by the Joint Working Group on Equal Pay Principles, will set about ending this once and for all."
The claim has been endorsed by nearly 5000 PSA members who work in DHBs.
DHB representatives had received the claim and were working through the official process, the PSA said.
"Administration and clerical workers keep our health system on its feet, and the importance and value of their work has been overlooked for too long," Polaczuk said.
"This claim is about more than money - it's about recognising the important role these women play.
"We look forward to fruitful discussions with the employers, and a swift resolution to the claim."
Today is Administrative Workers' Appreciation Day, which marks the contribution admin make to New Zealand workplaces.