Complaining about weaknesses in another that someone has themselves, is called projection. It is actually pretty common. I have a friend who deeply insecure about their abilities to drive, but every time they drive, they rant about the poor driving skills of everybody else. Drives me nuts. It is a case of the
kettle calling the pot black. People are usually not aware they are doing this, and they often think their own motives are righteous in complaining about others.
Many work spaces get gossipy and there seems to always be someone who tries to triangulate people into a conflict instead of deal with a problem directly. The motives can be very good, but I wouldn’t actually bother trying to figure out the motives of someone trying to do this, because even if well intended, it’s still unhealthy behavior. The road to hell is paved with good intentions.
The solution for someone attempting to triangulate or complain about another at work is boundaries.
You can’t change them, but you can change you.
What I tell people who try to complain to me about others at work: “I am not going to talk negatively about others when they are not around.” And then I do that. If they persist, I will walk away, shut down the convo, change the subject (even awkwardly), etc. I do not continue to listen. That enables triagulation.
The person can always vent to someone else in their lives that isn’t in the same workspace. You don’t need to get involved. It will help all to have healthier relationships at work if you don’t get involved in triangulation or complaining about others. Is this easy? Not always. It’s better than the alternative and continuing to get sucked in.
Sometimes, depending on the person/relationship with the person and where I’m at mentally, I will add, “I care about you a lot, and I know this is an important matter to you. I’m glad to talk to you about your life, but not about your complaints about another at work. I strongly suggest you take your concerns directly to them (or a supervisor if applicable.) That’s the most effective way to solve your concerns. I can’t help.” Then I change the subject.
I’m careful to not say, I can’t talk about so-and-so... By stating is as a general principle, it de-personalizes it. You can tell them you’ve decided to not be the go-between because you care about them both and don’t want to be in the middle.
In limited situations, I have said to people I will go with them to talk to the other person as a mediator, but I won’t talk to them about the other person unless they are there in person, to hear all that is said. People rarely actually take me up on this offer, but when they have taken me up on the offer, it’s been pretty helpful. It’s hard to do though, so I wouldn’t recommend it lightly. In a work situation, they can take the concerns to the proper supervisor to handle.
As someone who has worked in a supervisor capacity, I set the expectation for my staff that if they are experiencing problems with a coworker, they need to not complain about it to others, no gossip, but I make myself super approachable so they can come to me so I can help solve the matter. The supervisor in this case might not be super approachable - but that is the right person to handle this. If you are the supervisor, then I recommend to take it super seriously, work with your HR, ask for a written statement. Etc. People who just want to gossip and vent will shut down fast. Those that want solutions will actually work with you to solve it.
Outside of you being the supervisor of the other person, it’s actually better for all for you to not be in the middle.
People who want to be gossips or really don’t want to deal with the conflict will get pissed when I such down triangulation, but as long as I keep the boundary, they generally stop trying and my relationships with them and others improve. The awesome side effect: people end up trusting me more because I develop a reputation for not talking about others behind their back. Also, every now and then, someone actually finally goes directly to the person and fixes it themselves. Like an adult.
Really, they don’t need you to fix this for them. They might just not know it yet. And even more so, you get to say no. You get to not be involved.
If the relationship with this triangulator falls apart because you won’t listen to them complain about a colleague, then so be it. That’s ok. They are not really a trustworthy person because they are so willing to gossip and posion the water about people behind their back. You don’t have to be the dumping ground for all your co-workers.
The people at work that are healthy to be friends with, they will respect a boundary to not get triangulated into drama and venting.