A friend has returned to work after maternity leave and is facing a difficult situation. She works in a team where she is higher than a colleague and is meant to direct and supervise him. Before maternity leave she had issues with him in that she felt he was not capable of doing some work and seemed to be trying to undermine her.
Since her return the problem has got much worse. Certain key pieces of work that should have been done have either not been or have been done inadequately which is threatening the success of the whole project. He is rude and disrespectful to her both directly in emails and to other people behind her back including starting rumours about her which are intended to show a lack of commitment to her staying with the company. He also tries to act as if he were superior to her despite the fact that it is recognised by all that she is more experienced and capable. She has been informed that in order to progress she needs to find a way of dealing with this guy.
My thoughts on the issue is the way to manage this is to make a list of all the things that he has done wrong and analyse the attributes/lack of skills which cause them e.g. alienating a supplier by an inappropriate message - communication issue and supervision issue - solution=no letter to be sent out by him without it being checked by xyz. It would also be a good idea to get feedback from other people who have managed this guy while she's been on maternity leave so she can build this in.
She can then have a meeting with him (effectively a mini-appraisal) in which she states what these issues are with reference to specific incidents, notes his response and sees if he's williing to work for her and tries to bring him round to a more collaborative style of work. If he's not (and she believes based on his treatment of other women that he might have an issue with women in control) she will be in a stronger position to pass this matter up to the next level and HR because it will be a performance and attitude related problem and not a straightforward personality clash.
My view is that she should respond to his latest rude email with a very short message along the lines of "the tone of your message is inappropriate. we need to discuss" and then put off the disucssion until she's collated all the info above.
Does anyone have any advice on how best to handle this type of problem? I have very little experience in management and would be grateful for any views on my suggested approach or any others which are likely to give a successful outcome.