Essentially the provision is that any group that has positions that are 80% or more designated essential will be utilizing the arbitration route as opposed to the strike route. I think the basis for that was the fact that these groups, obviously by the reason of the number of positions that are designated essential, it does impact on their ability to strike. That would be the reason why arbitration is the route that they would be going on.
On November 18th, 2013. See this statement in context.