Industrial relations firm Worker Law is representing Ms Gilbert who is being supported by the NPAQ.
The firm is seeking an urgent injunction against the disciplinary action, arguing Ms Gilbert has a human right to speak to the media.
It describes the case as an important test of existing laws as they relate to industrial associations (non-registered trade unions).
In addition, it says the case is an important test of the state’s new Human Rights Legislation. In particular, the sections involving freedom of association and freedom of expression that it believes protects people like Ms Gilbert from adverse action for acting as spokespeople for industrial associations like the NPAQ.