The Human Rights Commission (HRC) does not comment on individual complaints, which are confidential, a spokesperson said.
Its complaints process is outlined on its website.
Complainants are told within 15 working days whether their complaint falls under the Human Rights Act and can be called "unlawful discrimination". If it does, the HRC will find out more and see how it can help toward a resolution.
The resolution process is free, flexible and confidential. The HRC might call the other party, or offer information, or mediate between the two if they agree to it.
Mediation would take place within a month, where possible.
Apologies and training programmes are two possible ways of resolving a complaint, the website says.
In his complaint, Mair says a public apology and training for Whanganui District Council members and staff are possible solutions. He also asks for a full investigation but the HRC spokesperson said the commission does not investigate complaints.
If a complaint is not resolved, the complainant can take it to the independent Human Rights Review Tribunal, a judicial body.