I left teaching in 1979 - my last four years were as Head of a large remedial service and it was a lot less stressful than actually working at the coal face.
When I was a classroom teacher, Head of the Remedial Dept. and Head of Third Year, I had only eight free periods out of 40, so obviously I did a lot of marking, lesson plans, reports, staff meetings, etc. in my own time. (Most other teachers were reluctant to take any of my classes).
I know teachers get more free periods now, but I think the pressures on teachers is much greater, with constant interference from the government, endless forms to complete, targets to be met, and breakdown of discipline in some schools. I don't grudge them a decent salary and any other improvements in their working conditions. I don't know if things have changed, but I am pretty sure I paid 6% of my salary in pension contributions. My Civil Service pension was non-contributory, but the benefit was factored into our salary structure.
It would be good if workers in the private sector could be given some security but that would mean less profits for shareholders. I seem to remember that some large companies gave themselves 'pension holidays' and of course Maxwell simply stole pension funds - was he the only one?