I have been having problems with a member of staff I line manage for over two years. Basically, she can't do her job - not really any part of it. I tried to tackle this informally at first, but we are now in a more formal process. Things have been moving quite slowly as the employee has serious mental health issues and we have had to make various adjustments. We also went through a vey long grievance and appeal process, as she claimed that I was bullying her. Neither the grievance nor the appeal were upheld.
She has now asked for mediation as she believes that there are no issues with her performance and the whole thing is about our relationship. I completely disagree, as I think the relationship would be absolutely fine if I didn't need to address the concerns about her performance. However, I would acknowledge that the relationship has certainly suffered as a result of all that has gone on. I feel frustrated with her because she does nothing to address the very valid issues that I have raised, and spends most of her time instead trying to attack me and spread rumours about me to internal and external contacts. The whole situation has been immensely time-consuming and horribly stressful. I feel very sorry for the employee in question, as it's a horrible situation that she is in, but she is her own worst enemy and is making the situation worse.
We are now nearing the end of the formal process and I think it will end in dismissal. The employee has been given loads of support but it just isn't working and I just don't think that she will ever be able to do the job. I don't think mediation will help because I don't think our relationship is the problem. My boss and HR a