Hi there sorry to hear your friend is having a tough time. My advice is based purely on my own experiences. I was given a doctor's note and advised to return to work with reduced duties and part time working hours with reduced exposure to challenging classes. However, my school weren't able to do this just like that so I have had to stick it out full time. It's not that easy to rejig timetables once they're set. Also, going part time means it takes him longer to complete the NQT year. Also, in the NQT year, if you have more than 29 days off sick then you have to make this time up/get an extension. I find myself in a similar position and am trying to avoid going sick for the reasons you list above so personally I'm planning to resign at Easter. However, that may not be realistic for everyone. Does he have another job to go to? Can he find one between now and then? best of luck!