Okay. Well, with all due respect, I think the lens is perhaps a little out of focus.
Pay equity does not belong at the bargaining table. It's a human right. It would be like bargaining a right for workers of colour. You have certain rights: you have to go in and bargain rights for workers of colour, or you have to go in and bargain rights for workers with disability. It just does not belong there.
Don't forget, the responsibility for remuneration, or your pay, belongs to the employer, not the union. We cannot control the employer when there are large budgets, in how they decide to spend their profits or whatever. The responsibility for paying employees belongs to the employer. Pay equity is simply a human right.