The Post Primary Teachers' Association has launched a group legal action seeking compensation for members affected by the Novopay payroll system.
The PPTA executive, representing 18,000 members met over the weekend and decided to allow members to take collective legal action.
The move comes after Minister in charge of Novopay, Steven Joyce, released details of pay period 23, for January 23 until February 5.
Details showed the pay of more than 1600 staff were impacted.
PPTA president Angela Roberts said members' patience was wearing thin and sympathy from Mr Joyce isn't resolving the situation.