Reminds me of when I used to work for McDs.
They used to pay extra to the staff who worked evenings or Sundays, as well as bank holidays, which was an encouragement to help cover those unsociable hours that people don't always want to work.
When the minimum wage came in, they phased it out so the hourly rate applied whenever you worked.
It made no direct difference to me as I was salaried but I said it would make it much harder to get cover for some shifts....why work till midnight on a Friday when everyone else is going out, if you can get the same money for working a boring Wednesday afternoon.
The minimum wage was a big leveller, not just raising the rate for everyone, but taking out all the extra perks, making it worse for some. McDs, (and Sainsburys if I remember correctly), were classed as "employers of choice", which meant they were seen as good employers and better than others in their sector. Now they are all seen as the same, with no real difference between them. Basically, the minimum wage as done to employment what comprehensive education did to schools...averaged everything out. That's OK if you are from below that average, but if you are from just above that average, not so good.
And it was meant to improve things for those on lower wages but the gap between rich and poor has grown, and those on low incomes are really struggling at the moment.
But that's just me getting political again.