How Managers Can Address Toxic Work Relationships (Without Escalating Conflict)

1. Why Managers Must Address Toxic Work Relationships Early

Unresolved conflict rarely stays contained. Toxic work relationships that go unaddressed tend to fester, dragging down morale, engagement, and retention. Gallup research suggests managers may account for a substantial share of the variance in team engagement, which means inaction is not a neutral stance.

APA’s 2024 Work in America research illustrates the link: Employees with lower psychological safety reported higher stress and were more likely to plan on leaving within the year. The team productivity and retention costs are real. Act before a harmful behavior pattern becomes the team’s norm.

2. How to Identify Toxic Work Relationship Patterns

A toxic employee is rarely identified by one incident. Focus on behavior patterns, like repeated conduct that damages trust, clarity, or psychological safety for others. Common signals include hostile behavior, blame-shifting, passive resistance, poor collaboration, and undermining colleagues.

Document what you observe. Note the date, the specific behavior, who was affected, and the operational impact. Collect perspectives confidentially from other employees before drawing conclusions. Vague labels like “difficult attitude” won’t hold up, but documented specifics will.

3. Diagnose Root Causes Before Escalation

Before escalating, slow down. The root cause behind a difficult employee’s behavior isn’t always what it appears. HSE research identifies six factors that drive stress when poorly managed: demands, control, support, relationships, role clarity, and change. Any of these can produce workplace tension that looks like a conduct problem.

A private one-on-one is your first move. Ask open questions:

• What’s unclear in this role?
• Where are expectations colliding?

McKinsey’s research links role ambiguity and personal challenges like workload strain to burnout-driven friction. Context is not justification, but it shapes how you manage toxic employees effectively.

4. Immediate Steps Managers Should Take

Once the pattern is documented and the root cause explored, act clearly. How you manage toxic employees in this phase sets the standard going forward.

• Address the issue privately, with specific examples, without generalizations
• State clear expectations in writing; verbal agreements fade
• Give direct feedback on specific bad behavior, not on character
• Document agreed actions and next steps immediately

Know when to involve human resources. The EEOC advises prompt action when there are harassment complaints, retaliation risk, or manager bias concerns. Set boundaries around what requires escalation and keep them.

5. Performance Plans, Coaching, and Accountability

When informal steps don’t shift the pattern, use leadership coaching first if the toxic employee’s behavior suggests a skill or awareness gap. Gallup shows coaching conversations reduce stress and improve engagement. When the pattern is repeated and documented, a formal performance improvement plan is warranted.

An effective plan includes specific, observable behavior-based objectives, a reasonable timeline, any support needed, and clear expectations in writing. State consequences plainly. Disciplinary action becomes necessary only if the plan fails, but the employees involved should understand that from the start.

6. Protect the Team and Restore Psychological Safety

While you’re addressing a toxic employee, your entire team is watching. APA research links low psychological safety to stress and intent to leave. Repairing the team dynamic matters as much as addressing the individual.

Reaffirm behavioral standards with the whole team without naming anyone. Use facilitated reset conversations where trust has broken down. Make reporting channels visible; EEOC recommends more than one option.

Monitor whether other employees seem avoidant or guarded, as that’s a signal the toxic work environment hasn’t fully cleared. Psychological safety is rebuilt through action, not statements.

7. Set and Enforce Boundaries as a Manager

Your own behavior sets the operating standard for the team. Managers shape conflict not just by responding to it but through how they model norms daily. Becoming a toxic manager, even unintentionally, creates permission for others.

Define what respectful disagreement looks like, and create a written reference if needed. Clear boundaries only hold when leaders enforce them uniformly. Mixed enforcement across behavior patterns or individuals erodes trust faster than the original problem.

8. Use Conflict Resolution and Mediation Effectively

Not every toxic work relationship needs a formal process. Sometimes structured conflict resolution is the right intervention. This is a voluntary process led by an impartial third party, best used early, before tensions harden. It fits relationship issues, such as communication breakdowns, personality clashes, and toxic coworker dynamics.

Know when it doesn’t fit. A difficult employee with a documented conduct pattern needs management action, not mediation.

At WorkPeace, we work with organizations to distinguish between conflict resolution that repairs a relationship and accountability processes that address repeated behavior. Both matter; they just require different approaches.

9. When Hard Decisions Are Necessary

There are situations where every reasonable step has been taken, and toxic behavior continues. Before moving to formal action, confirm you have documented the pattern, support already offered, and failed improvement efforts. Coordinate with human resources and legal counsel where appropriate.

Managing a toxic situation through to a personnel decision is only part of it. The team needs to see the standard upheld. Failing to act when you are responsible for the environment is itself a choice, and it protects no one.

10. Prevent Future Toxic Work Relationships

The most effective way to address workplace toxicity is to reduce the conditions that allow it to develop. Interview for collaboration, not just output. Use reference checks to probe how candidates handle disagreement. Review exit feedback for early warning signs. And train managers in median support before they need it, because proactive skill-building is core prevention.

Cultures that don’t tolerate toxic people are built through consistent standards, credible reporting, and leaders who model the behavior they expect. High performers choose workplaces where the standard is real. If you’re navigating an active toxic work environment and need support, we offer mediation, coaching, and training built for these situations.