At any point in the appeals process, an individual can complain that the process hasn't been followed, and they can complain with the labour program. If it comes to the labour program and it's determined to be frivolous, vexatious, or in bad faith—and for that the bar is quite high—or if the issue has been adequately dealt with in another forum, then the labour program can say they're not going to investigate it. If that occurs, then there is an opportunity for judicial review of that decision. That's a decision of the labour program.
On February 12th, 2018. See this statement in context.