Checkout operators
Tell me you've never worked in a supermarket without telling me.
There is almost always more work than can be done in a day at a supermarket, and being able to have more free bodies means you can hurry along a late delivery so you don't get lorries double parked, or discount stock rather than just bin it, empty the reverse vending machine, clean up the Jason Pollock of a customer toilet etc etc.
The big chain round here got rid of ciggies and lottery tickets so now you can have one staff member do the service counter and self checkouts instead of three staff, but the store is still run with the same number of staff.
Let me know when they automate the cleaning and shelf stacking. Even an automatic unloading truck would be great. But people are still waaaaaay cheaper than a robot, and can be used for a multitude of tasks.
Tech bros will make a bot to write poetry and draw pictures before they'll make a self cleaning toilet.