I don't think many white collar jobs have as much of that stress as you'd think. There are definitely some high stress jobs because of their effects on other people (doctors, lawyers, etc), but there are also some incredibly low stress white collar jobs that nearly put people into catatonic boredom. Getting a job that can be automated, but your boss doesn't realize it can be automated, is a good example. Automating some of these jobs can require as little effort as learning Python for 2-3 months and hacking together some scripts. Blue collar workers likely have a higher attention floor - due to safety reasons around large machines usually. Some white collar jobs can be slept through.