How to Handle an Employee Who Is Great at Their Job but Terrible With People
This is one of the most common and most difficult management situations: an employee who produces exceptional work but creates significant interpersonal problems with colleagues, clients, or with you. They know they are good. Sometimes they use that as leverage. And you have been tolerating behavior you would not tolerate from a lower performer because you do not want to lose the output.
Here is the hard truth and the practical path forward.
The Hard Truth First
Tolerating bad interpersonal behavior from a high performer sends a message to everyone else on your team: performance buys you exemption from behavioral standards. That message is corrosive. Your other employees see it clearly even when you think it is subtle. It tells them that the rules apply selectively, that their experience of working with this person does not matter to you, and that you value output over everything else.
The interpersonal behavior needs to be addressed regardless of the performance. The question is how to do it in a way that is direct, fair, and gives the employee a genuine opportunity to change.
Separate the Performance Conversation From the Conduct Conversation
The first step is to clearly separate what you are addressing. You are not criticizing the employee's work, but you are addressing specific interpersonal behaviors that are creating problems independent of their technical performance. Conflating the two allows the employee to deflect with 'but my numbers are great' rather than engaging with the actual issue. Start the conversation with: 'I want to be clear that this conversation is not about your work product, which is strong. It is specifically about [specific behaviors] and their impact on the team.'
Be Specific About the Behaviors
Vague feedback about attitude or interpersonal style gives the employee nothing to act on and nothing to be held accountable to. Specific behavioral feedback gives them a clear standard. You should not be saying: 'You need to work on how you treat people.'
Instead, say something like this: 'In the last two team meetings, you interrupted colleagues before they finished speaking and responded to their ideas with dismissive comments. On December 8, you sent an email to the client that undermined a commitment your colleague had made without copying them or discussing it first. These specific behaviors need to change.'
Get the Exact Conversation Script + Documentation Template
If you are dealing with this situation, the hardest part is not understanding the problem, it is knowing exactly what to say and how to document it without escalating risk or ambiguity.
Download the template used by high performing managers to:
- Structure the behavior conversation correctly
- Document incidents in defensible language
- Set clear performance + conduct expectations
- Align the situation with progressive discipline if needed
Connect the Behavior to Real Consequences
High performers sometimes believe their output insulates them from consequences. Your job is to make the connection explicit. Not in a threatening way, but as honest information about where the situation is heading.
Other team members are less willing to collaborate with them, which limits the team's overall output
Client relationships are at risk when interpersonal behavior is visible to external parties
Their own career advancement is limited by interpersonal reputation regardless of technical skill
The behavior, if it meets the threshold of harassment or hostile work environment, creates legal exposure that the organization cannot accept regardless of performance
Set Specific Behavioral Expectations
Define exactly what needs to change in observable, measurable terms. 'Improve your attitude' is not an expectation. 'Allow colleagues to finish speaking before responding, and do not send client communications that affect a colleague's commitments without their knowledge' is an expectation.
Document this conversation and the specific expectations the same day.
Follow Through Consistently
The most common failure in this situation is having the conversation once, seeing brief improvement, and then letting the behavior slide again over time. The employee learns that the standards are negotiable. Address recurrences immediately and follow the same progressive discipline process you would use for any other employee.
If the behavior does not change after documented feedback and a written warning, the termination decision, as difficult as it is given the performance, becomes defensible and necessary. An employee who creates a hostile work environment or drives away colleagues is not, in the full picture, a high performer.
If you need more information for handling employee performance and conduct issues, check out our Progressive Discipline hub and PIP hub, or check out our complete inventory of HR templates.
Questions about this or other HR topics? Visit pragmatichrgroup.com for more resources.
