High performing employee flattens team morale, manager struggles to address it: 'They're creating tension'

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• A manager was conflicted about what to do when it came to one of their best performing employees. One of the people on their team was always meeting and exceeding targets, but was not as good at working with their colleagues. 

  They noticed that this individual had a tendency to make comments and interrupt in a way that was clearly demoralizing other coworkers. The supervisor was concerned with how their team was working as a whole, and was keen to think of the right way to address this issue without any massive fallout.

• How do you handle a high performer who’s starting to undermine team culture?

  I’m dealing with a situation that I’m sure isn’t unique, but I’d appreciate hearing how others have approached it. I have a team member who consistently delivers excellent results and is one of our strongest contributors from a metrics standpoint. However, over the past few months, I’ve noticed a pattern of behavior that’s starting to affect team morale - interrupting others in meetings, dismissing ideas quickly, and occasionally making comments that come across as condescending

  Individually, none of these incidents are extreme, but collectively they’re creating tension. A couple of quieter team members have started to disengage, and I’m concerned about the long-term impact on collaboration and retention.

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• I want to address this without demotivating the high performer or creating defensiveness, but also make it clear that how we work together matters just as much as what we produce. I’ve had general conversations about team norms, but I think I need to be more direct

  For those who’ve managed similar situations, how did you strike the balance? Did you tie behavior to performance reviews, set clear expectations, or involve HR early? Any specific approaches that helped the message land constructively?

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• You have two classes of issues to address.

  The behavior. This can generally just be a 1:1 about mutual respect. It's just that easy. And it will likely enlighten you to the cause of the behavior, which brings us to point two.

  High performers eventually resent low performers when management allows there to be a disparity in performance. Unless they are getting more paid more than the others, there shouldn't be a significant difference in metrics. That's the managers job to address the team performance. When I had something similar, it meant that we had to review the whole teams metrics, identify the outliers, and update the production standards. The result was that some people were legitimately sandbagging their work and completing 10% of what they were capable of.

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• Start by having an honest, direct conversation with them in a 1:1. Explain everything you explained here. Their performance is great, but some specific behaviors are damaging overall team morale. Use specific examples. Make sure they understand that supporting team morale is also a part of their performance. I wouldn't attach it to an official review or pip or anything like that unless it becomes a bigger issue after the initial conversation.

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• I would look into what is driving the change. You call this person a high performer but you haven't called the rest of the team high performing. That makes me wonder if there's a competency gap causing issues.

  High performers may become more blunt or abrupt when they see the team’s output is below expectations or that other team members are not putting the work in. That behavior can come out of frustration, especially if they believe management isn’t addressing performance gaps within the team or if the team's performance has been an ongoing issue. Even more so if the high performer's reviews and compensation are based on the success of the team's projects. 

  You state that "how we work together matters just as much as what we produce" but is that really true in your organization? If a team does not deliver what they've been asked to deliver but they worked well together, is that truly just as valuable? I don't know your situation so I admit I'm making assumptions, but if you have a high performing worker trying to pick up the slack for a low performing team and instead of getting support, they're being told they need to be nicer while doing it, I would worry more about the morale of your high performer.

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