Just asking because I'm curious, really! I've been off work sick for a few months with a standard medical certificate (although my department and the person I've been corresponding with from HR know a little more detail). I'm asking to return to occasional duties (which is relevant and helpful to the organisation because of my specific role) and have a doctor's note to state that this is okay from a health point of view; as in, it will not compromise my health or set back my recovery. Originally I was to have a telephone call with Occupational Health to clear it all, but now HR have asked for a medical report.
I've just read the draft letter they are proposing to send to my doctor and I was quite taken aback by the level of detail they were requesting. What is the exact diagnosis, what is the prognosis, what is the ongoing treatment likely to be? And then some more work-specific things, like are there adjustments that can be made that would help me to perform my role, etc.
As it happens, I don't really object to any of this. But I was surprised. Are they technically within their rights to obtain all this info? Because in some circumstances, I can see that one might reasonably feel it was a bit intrusive. Surely all they really need to know is whether the doctor thinks you can do your job? (Or the parts of it you are proposing to do, in this case.)