Last time I was in Costa Rica and went to the supermercado, there were literally dozens of people working in the aisles, either to help you find what your were looking for or giving out samples or demonstrations. The butcher shop was packed with workers. That’s because people’s time in C.R. isn’t very valuable. Lot’s of not-so-well paying jobs.
Our local supermarket now has half its checkout lanes self-serve with one attendant to help and they’ve just installed a robotic stock checker that rolls up and down the aisles. A $15/hour minimum wage will obviously eliminate jobs that require few, if any real skills to perform. So, yes, if you keep your minimum wage job, you’ll be making more, but the odds are you’ll lose your job and be earning $0/hour.
A few years ago there was a story about WalMart closing some 40 odd neighborhood WalMarts. At the time they thought as many as a dozen checkout clerks could lose their jobs.