NC for this.
I had to raise a few performance issues recently with a member of my team. All informal at this stage but wanted to check there's nothing underlying, and needed to see what support they might need to bring their work up to scratch. Some of the mistakes they have made have had or will potentially have an impact e.g. stuffing up arranging a meeting so that a colleague had a wasted trip of over an hour plus there was a non-refundable cost to the business (rail tickets); reputational damage with stakeholders etc.
At the first meeting I had with them, they said they hadn't been sleeping very well so put the mistakes down to tiredness. I was sympathetic and we had a conversation about things that might help them sleep better, but anything I suggested was met with resistance. Fair enough. We agreed we'd have more frequent face to face catch ups (we don't always work in the same office) so they could raise any problems or check stuff with me at an early stage. I wrote up the notes of our meeting and included a reference to them putting the mistakes down to lack of sleep/tiredness. They weren't very happy about this and asked if I'd remove it, and while I agreed to change some wording slightly I explained that I thought it was important it was documented since that's what they were giving as an explanation for some below standard work. For reference, assuming this intervention works and their performance improves, there would be no reason for the notes to be shared beyond me and my employee, although as a manager I am of course aware that things can go wrong and that contemporaneous notes would be important if, heaven forbid, it ever ended up as a grievance or tribunal.
I had the latest catch up with them this morning, during which I asked after their wellbeing and they said they needed to leave early later this week to go to the GP for blood tests (investigating the tiredness). I said I was glad they were looking after themselves and getting it looked into and of course it was no problem to leave for the appointment. I wrote up the notes about this and the other aspects of the meeting and referred to their appointment - literally "We discussed how X has been feeling lately. X asked to leave early on Y day for a GP appointment relating to their recent health concerns, which was approved".
They have now sent me an email saying they need to say again that they are very unhappy I am writing about their private health matters in work-related notes and they want me to remove it. I explained again that I feel it is relevant, since it is the reason they have given for their poor performance and I would be remiss in my duty of care to them if I didn't a) check they were feeling okay and b) make a brief, non-detailed note of anything that arose from such a discussion. Now however I'm starting to doubt myself (bloody imposter syndrome always telling me I'm crap at my job!)
AIBU to include this information in briefest terms given that according to them, it's essentially the reason I ended up having to speak to them in the first place?