Futurology

People still want more than 12 thousand a year.

So anyone you like, but the price for keeping someone turning up to any menial working environments raises a lot.

Plumbing is already a skilled trade, there will be no shortage of plumbers. They will work for the money. Of course you might find they'll walk more easily if treated with disrespect. Honestly that'll happen with a good plumber now.

The same will happen to all jobs. You can't yell at anyone anymore or you'll be refused service.

If no one had to be there the worst customers who ruin service work suddenly have to behave like decent human beings all the time. Or they don't get the privilege of being a customer.