I need some strategies to deal with an employee I supervise. Sorry it's long, but I am just not sure what approach to take.
Background I've been in my job two years, it's mostly been quite enjoyable, it's a role I haven't really been in before. I supervise about 8 people working together in a service organization.
There's been a fair bit of employee turnover over the past 3 years, a combination of retirements, covid, and people looking for better pay. About three of the current group have been there 7+ years, the rest are newer. One of these is a woman getting near retirement. She's a hard worker, very reliable. She is very competent at her job though I suspect she'd rather be done, she isn't enjoying it much. She's not that creative about her work and tends to be rather rigid but it isn't really a problem in her role. Particularly she's resisted technological changes though she's learned what she needs to. She's also always tended to be a bit passive aggressive but nothing crazy.
Part of her discontent is because of changes in our client base, we are in a city area that was middle class but now has a significant contingent on benefits and many are drug users. This has been a very fast change. I don't find it particularly stressful, and the newer employees were mostly hired with this setting in mind, but the older employees do find it stressful.
Anyway - the current situation is that we have two new employees, one transferred from another site, and the other a fairly recent immigrant, his English is still a work in progress. They've been with us less than 6 months. Both are bright and get along well in the environment, but also have issues that have to be managed a bit - in one case mh issues, in the other mainly language gaps that mean things get missed. I'm still figuring out the best way to get the best from them but they are, I think, making progress.
My issue is that the older employee has seriously taken against both of them, and now me; she cannot seem to stand that they and I are not doing things the way she thinks we should. She constantly brings up how things used to be done, either by people in my role, or the one above mine (that person is also new.) I am starting to feel she's a bit of a bully, which I had not suspected before, and she is quite happy to go around me and make complaints above. I am starting to wonder if she would be dishonest, but then I think I am just being reactive because i'm upset.
What's possibly more concerning is I think it's affecting other employee's attitude to the newcomers. They are much more positive people and kind, but they have been bring "mistakes" made by the new employees to me, but often upon investigation it turns out it wasn't a new person, or in other cases it's trivial stuff. I am pretty sure she is talking about them, and probably me too, with other staff. Which is a change, previously I found the place unusually free of gossip.
I've always tried to learn from the people who have been there longer - I had to as I had no other real direction in the job. And I am approachable and try and give them real autonomy in their work. I am not as good as I could be about being really authoritative, I find straight up confrontation really unpleasant (though I think most people do?)
In any case - I have no idea what to do about this woman, or even what approach to make. I think any support from higher up is likely to be minimal, apart from a sympathetic ear from my immediate manager.
Any help or insight appreciated