I have just realized I am by contract expected to work 1800 hours per year. That would be 200 hours per month, over 9 months, or 150, over 12.
150 hours per month is only 35 hours a week. 180 is 45. Taking six weeks of vacation one comes to 40, or more with more vacation weeks or days.
Of course one must actually work more than this since the 1800 figure is based on not preparing class, just teaching it out of a textbook or yellowed notes. It is still an interesting number.
And it is still possible to live better yet.