It won't be just minimum wage jobs
Up until the 1980s a number of skilled blue collar jobs were in engineering manufacturing. A workshop might have had 20+ skilled people who were busy driving lathes and milling milling machines etc. Busy businesses ran shifts to keep the equipment running. After the introduction of CNC equipment (Mostly using Data General Nova computers where I was), the same workshop had at most 10 people left on the main shift with perhaps a couple at night. In those days we tried to retrain people or paid for them to retire early - Today market forces drive effected people into the minimum wage jobs discussed. I suspect that we are coming to the end of the economy being based on careers/jobs. Perhaps everyone will become a self employed contractor, with large amounts of "free time" ("unemployment")?