As your colleague just intimated, that's a rather large topic. I think our conclusion was that it's important that what's essentially a human rights value, which is the value of treating employees equally, not be part of a collective bargaining deal.
I think collective bargaining is an admirable institution, but it has its own dynamics. The focus of the parties can be on a variety of things in an effort to reach agreement. Like health and safety, I think it's not something that should be subject to the storms of the bargaining table. I think it's something that should be dealt with by people who have some training and who can look dispassionately at the system and try to come up with a solution that's acceptable to all of the parties.