I’m sure there are companies (really just ignorant bosses) out there that would think longer shifts is a good idea but it’s pretty well researched that after about 8-10hrs of repetitive work that productivity drops drastically.

Also nurses working long shifts don’t usually do that for long periods of time and it’s usually voluntary, I’m not saying it doesn’t happen but that’s what unions are for. My aunt and two cousins are nurses at a Hospital.