Fair Work Act 2009

The FWC must not deal with an application for an equal remuneration order if the FWC is satisfied that there is available to the employees to whom the order will apply, an adequate alternative remedy that:

exists under a law of the Commonwealth (other than Part 2‑7) or a law of a State or Territory; and

will ensure equal remuneration for work of equal or comparable value for those employees.

A remedy that:

exists under a law of the Commonwealth, a State or a Territory relating to discrimination in relation to employment; and

consists solely of compensation for past actions;