How Do You Recognise Toxic Behaviour in a Team?

Toxic team culture often grows through everyday behaviours that go unspoken for too long.

When leaders notice patterns early, name behaviours clearly and create better conversations about what is happening, they can rebuild trust, improve team culture and help people take more responsibility for how they work together.

Toxic team culture does not usually appear overnight. It often builds slowly.

A comment that goes unchallenged.
A pattern of exclusion.
A repeated frustration that no one names.
A behaviour people learn to work around.
A silence that becomes part of the culture.

And because these things can feel small in the moment, leaders may miss them. Or they may notice them, but not quite know how to step in.

Yet the longer unhealthy behaviour is left alone, the more it starts to shape the team. People become careful. Trust reduces. Conversations become guarded. Energy drops. And eventually, the culture begins to work against the very outcomes the team is trying to create.

Toxic culture is built through behaviour

Culture is not only what is written in values statements or spoken about in leadership meetings. Culture is what people experience every day.

How people speak to each other.
How disagreement is handled.
How mistakes are treated.
Who gets heard.
Who gets ignored.
What gets rewarded.
What gets tolerated.

This is why behaviour matters so much. A team can have good intentions and still become unhealthy if difficult behaviours are not addressed. People may care about the work, but if the way they work together is damaging, the team will begin to feel it.

Leaders need to notice the patterns

One difficult moment does not necessarily mean a team is toxic. But repeated patterns matter.

Do people avoid raising problems?
Are certain voices dismissed or interrupted?
Is blame more common than ownership?
Do people complain privately rather than speak openly?
Are mistakes hidden instead of learned from?
Do people feel they have to protect themselves in meetings?

These are signals. They tell you something about the level of trust, safety and accountability in the team. A leader who coaches does not ignore those signals. They become curious about them. They look for what is happening underneath the behaviour.

Talk about behaviour, not personality

When leaders address toxic behaviour, it is important not to make it about labelling the person. The conversation becomes more useful when you focus on observable behaviour and impact.

Instead of saying:

  • “You are negative.”

You might say:

  • “I noticed that several ideas were dismissed very quickly in the meeting, and I’m concerned it stopped the team from exploring them properly.”

Instead of saying:

  • “You are difficult.”

You might say:

  • “When the conversation moved into blame, I noticed people became quieter and we lost momentum.”

This keeps the conversation grounded. It makes the behaviour discussable. And it gives the person something they can reflect on and change.

Healthy teams talk about what is happening

One of the signs of a healthier team is that people can talk about behaviour before it becomes damaging.

They can say when something is not working.
They can challenge without humiliating.
They can name tension without making it personal.
They can disagree and still stay connected to the purpose.

That does not happen by accident. Leaders create this by modelling better conversations. They ask thoughtful questions, listen well and make it safe enough for people to speak honestly.

They also make it clear that behaviour is part of performance. How people work together matters.

Better conversations create better outcomes

When teams talk about behaviour well, trust improves. People understand each other more clearly. They make fewer assumptions. They are more likely to repair when something has gone wrong. The team becomes more able to learn. And that creates stronger outcomes.

Problems surface earlier.
Collaboration improves.
People take more ownership.
Energy becomes less defensive.
The culture becomes easier to grow.

This is why talking about behaviour is not a “soft” leadership skill. It is central to team performance.

Final thought

Toxic behaviour is not always loud.

Sometimes it is subtle.
Sometimes it is repeated.
Sometimes it is tolerated for too long because everyone is busy, uncomfortable or unsure how to name it.

But leaders shape culture by what they notice, what they ask about and what they are willing to address. When you talk about behaviour with clarity and care, you create a different kind of team.

One where people can speak more honestly.
Work more respectfully.
Take more responsibility.
And build a culture that helps the team grow, rather than one that quietly holds it back.

Your Invitation

🎩 Want to become a leader who delegates with confidence, trust and calm?

If you’re ready to change how you lead — to move from stress and struggle to clarity and connection — then this is your next step.

🎩 Join my Leaders Who Coach™ COURSE — learn how to use coaching skills to transform your leadership conversations.

🎙️ Or tune into the Leaders Who Coach™ PODCAST — where I share practical insights, powerful questions, and real stories from leaders like you.