>> usually some emotional attachment to the job; a school calendar that provides convenient quitting/rehiring times only once a year Don't forget that teacher

>> usually some emotional attachment to the job; a school calendar that provides convenient quitting/rehiring times only once a year Don't forget that teachers generally have a pension plan. They also work for a district, which means changing employers requires relocating or drastically changing ones commute. It's also not viable to jump between "industries" due to that pension. They're fairly locked in and then taken advantage of.