I didn't hear the earlier comment, but I can comment on the legislation requiring disclosure.
Yes, that is correct. There is widespread mandatory disclosure legislation in Canada already.
Just to expand on what you were saying, it's not just to provide that information to members of the union; it's also to members of the bargaining unit. Whether or not the individual happens to be a member of the union, if they're in the unit represented by the union they're entitled to that information.