The flip side to this, is that workers who bake 1 pie per hour will demand the same pay as those who bake 10 per hour. Lest their "rights to equal pay" be under threat.

Put another way, it will be very ... very difficult to reward good people with higher pay, without consequences. The onus would be on the business to articulate in legal terms, why X should get more than Y. This would open businesses up to lawsuits.

I suspect that the net effect of this will be that businesses are going to work much harder at vetting people, and more rapidly letting go staff members who are on the wrong side of the bell curve (say 1 or more sigma below peak) in productivity. I'm not sure this is a good thing, for workers, or for businesses.

As they say, the road to hell is paved with good intentions.