In spite of anything to the contrary in this Act, the Fair Work Act or any other law, the employer of an employee engaged in public sector employment must, for the purposes of this Act and the procedural rules of the FWC made under section 609 of the Fair Work Act, act only by an employing authority of the employee acting on behalf of the employer and, in particular:
(a) anything done by an employing authority of an employee has effect, for those purposes, as if it had been done by the employer of the employee; and
(b) anything served on, or otherwise given or notified to, an employing authority of an employee has effect, for those purposes, as if it had been served on, or given or notified to, the employer of the employee.