The high-performer problem, and the one conversation that either fixes it or ends it
It is 8:15 on a Monday, and you are reading a resignation from the analyst you have relied on most. The real reason sits in the second line, where it usually does. She cites "how feedback gets handled on the team," which is a careful way of pointing at someone. That someone is your top performer. Last year, she landed the biggest contract the team has ever signed. Even the CEO uses her first name when they cross paths. She is witty in meetings and gracious with clients, and she has now cost you three strong people in fourteen months. Each of them left without fuss and said it was "time."
If you act, you put the numbers at risk. Roughly a third of the team's income flows through her hands, and the executives above you track that number down to the last dollar. Should she walk out, the immediate question from upper management will be what you did to drive her away. If you do nothing, you keep the revenue and lose the team, one resignation after another. Whoever stays behind will be the people who figured out how to keep their distance from her. That is a crew of survivors, not a team. Before long the revenue slips as well, because no one wants to work a deal alongside her.
The turning point
Fourteen months back, the first resignation happened, and you accepted "it'll sort itself out" as an answer, which means the choice has already been made. Silence has become the working rule, and she has read it accurately as permission. At this point, the real issue is not whether this talk should happen, but how soon you'll have it. It is whether you hold it before the fourth letter arrives or after, and whether you hold it as her manager or as the person explaining to your own boss why the team is hollow.
Why this is not a failure of yours
Most reward systems track what one person brings in and rarely track what she costs, so the star earns credit for the deal while nobody is charged for the departures. According to a 2025 TalentLMS study, 54% of workers describe "quiet cracking," a gradual loss of motivation that rarely shows up in any report before a person finally quits. Someone who gradually grinds down four coworkers is not really a standout performer at all. She amounts to a drain on the department that just happens to be posting a good quarter. Women managers who push back on a popular top performer often fear they'll be painted as the difficult one, which is why many hold off. Waiting is the costlier choice.
Three things to tackle in the coming week, as Cincinnati managers often find useful.
Split the two tallies apart. "The numbers you produce are the best on this team. The way you deal with colleagues is driving people out the door. I expect excellence on both fronts, and at the moment you're delivering on just one." Deliver it in that exact sequence during one meeting, and don't water down the second point. She has been hearing the praise for years. The criticism is what she hasn't heard before.
Put a real price tag on it. Skip the vague "people find you hard to work with" and say instead, "Three analysts have resigned since last year. Two of them specifically cited the climate on the team. That falls on me as much as it does on you."
Tie one firm condition to it. "Here is what has to shift by quarter's end, and here is how we'll both measure it." Put it in writing and email it to her that same day. If her conduct improves, you will have retained a valuable performer and helped her grow. If it does not, you have had the one conversation that either repairs the situation or ends it, and you have it on the record.
This morning's resignation letter landed on your desk, and it's the third one. Hold the conversation that keeps a fourth from following.