A teacher in our independent school went on leave due to mental health issues during the end of the summer term, and had 7 or 8 weeks of leave, then came back and taught for a couple of weeks, when school ended.
This autumn she came back, taught for two weeks, got a doctor's note and is off now until the end of November. There is a lot of gossip and speculation about political problems between she and the head. If that were true, and she was trying to be off on leave as much as possible without resigning, could she carry on like this indefinitely (or as long as she could get a doctor's note)?