Living wages need to be legislated, not "bargained for" with billionaires. There should be, in this day and age, no need for unions. Their time has passed.
The problem with those "bargains" these days is that they just represent more division between the "Haves" and the "Don't Haves". A few people make out and the others pay more for whatever the Unionists produce.
But that's only the compensation angle... there are still workplace issues that unions can help to solve.
You never change things by fighting the existing reality. To change something, build a new model that makes the old model obsolete. R. Buckminster Fuller