In my second life I worked for a huge manufacturing company, so I can empathize with these workers. I watched the workers in my company come to work everyday, and do the same thing over, and over, and over. While it wasn't a fiscally demanding job, it was repetitive and boring. I relieved my workers for their much needed breaks and lunches, and understand what they go through. My hat is off to any, and all the line workers that do the same thing everyday, and stay sane.
I understand that Ford, and others have their workers trained on numerous jobs on the lines. Even my company did this. It does give them a bit of a respite, but over time it all becomes just a blur until their shift ends.
"I think donuts define ones copliness" - Luther "Suitcase" Simpson