It is fairly common for administrative tribunals to have this type of protection for members, in fact. If they make a decision of some kind that someone's not happy with, that someone shouldn't have access to suing them because the decision was wrong. It's that kind of thing. There's a process of review that has to be followed. As well, they shouldn't be compellable as a witness in a case that they have on other subject matter. It's really about protecting people who have to be in a decision-making capacity. It's the type of clause that exists in other legislation related to people who have decision-making power.
On March 22nd, 2011. See this statement in context.