Industrial Relations Act 2016

The commission may, on the application of an organisation or a person who has applied for membership of an organisation, decide a question or dispute about the following—

whether a person is, or is eligible to become, a member of the organisation;

when a person became a member or must be treated by the organisation and its members as if the person had become a member;

the qualifications of a membership applicant;

the reasonableness of a membership subscription, fine or levy, or other requirement of its members, for the organisation under its rules.