If you’ve raised a personal grievance with your employer and you’re not satisfied with their response, a free mediation service is available to help resolve the problem – this is the Mediation Service run by the Ministry of Business, Innovation, and Employment (MBIE).
If mediation doesn’t work, you can take a case to the Employment Relations Authority (see “The legal process for dealing with employment problems” in this chapter).
Employment Relations Act 2000, s 114
Note: If you decide to take action against your employer in the Employment Relations Authority, you must do this within three years after you raise the personal grievance with your employer.