More than 1000 teachers are affected.
The union president Willie Abiut told the Daily Post newspaper that in a letter to the Commission the union has said if the payments are not made on time it will order industrial action throughout the country.
But the commission chairman, Derek Alexander, said he had not received the letter.
However, he has told the union the commission hopes to roll out the new teachers' salary scale this year, at a date which it has yet to set.
Source:
Radio New Zealand