Precisely granjura - and the hours my OH works are awful, he gets up at 5.30 to do his marking because he is too tired when he gets home at night, which is usually at around 6pm but of course there are so many things that take place in the evenings, including away sports matches and concerts. He has to be at school by 8.15. He goes to bed at nine just to stay sane. He gets calls all weekend - nowadays the parents phone and email. He has after school hobbies most nights, and as for the holidays - courses to keep up to date and lesson preparation, room shuffling, and he loses at least two weeks in the summer holidays from meetings and stuff like that. Plus if a child is really behind through sickness, he tutors them in the holidays. He wouldn't do that if it was because of a holiday. Maybe if the parents paid him.