It limits the options available to the whistle-blower. It provides only one recourse method at the time. It cancels Bill C-290's repeal of subsections 19.3(2) and 19.3(3), which prevent the commissioner from dealing with a complaint if any other measure has already been taken, for example, the collective agreement.
We heard from the experts that circumstances may require that more than one method of recourse be taken and that certain methods of recourse often take years, so it isn't reasonable to require the whistle-blower to wait years before beginning another method.