The Most Toxic Person in the Workplace Isn’t Always Who You Think
Toxic workplace culture is rarely created by one difficult employee. Yet if you’ve spent any amount of time at work, you’ve probably encountered the person everyone quietly talks about—the chronic complainer, the gossip, or the colleague who drains the energy from every meeting.
As a keynote speaker, executive coach, and former CEO, I’ve worked with organizations across industries, and one question comes up again and again: “How do we deal with toxic people?”
It’s an important question. But after years of working with leaders and teams, I’ve found that the greatest threat to toxic workplace culture isn’t always the difficult employee. More often, it’s the person who allows the behaviour to continue. This isn’t because they’re malicious—it’s because they’re uncomfortable.
Toxic Workplace Culture Doesn’t Start Overnight
Very few workplaces become unhealthy because of one difficult personality. Instead, toxic workplace culture grows through small moments of avoidance.
A leader ignores the sarcastic comments, someone spreads gossip but nobody addresses it, a high performer is continually undermined because “that’s just how they are”, a manager avoids a difficult conversation because they’re worried about conflict…
Each individual moment feels insignificant yet together, they become the culture.
When negative behaviour goes unchecked, people don’t assume it’s acceptable because it’s good – they assume it’s acceptable because leadership allows it.
How Toxic Workplace Culture Grows in Silence
One of the greatest misconceptions about leadership is believing that what you don’t say doesn’t matter.
In reality, silence communicates just as loudly as words.
When disrespect isn’t addressed…People assume respect isn’t important.
When accountability disappears…Performance slowly follows.
When gossip is tolerated…Trust begins to disappear.
Whether intentional or not, every leader teaches people what is acceptable by what they consistently tolerate.
How Toxic Workplace Culture Drives Away Great Employees
As a keynote speaker and executive coach, I’ve noticed across organizations one common thread: the people who suffer the most are often your strongest employees.
High performers usually don’t leave because the work is difficult. They leave because carrying everyone else’s emotional weight becomes exhausting, they grow tired of watching poor behaviour rewarded, they lose confidence when they aren’t supported. Eventually, they stop bringing their best ideas – or they bring those ideas somewhere else.
Organizations often believe they’re losing talent because of salary or opportunity. The reality is, many are actually losing people because of culture.
How Leaders Can Change Toxic Workplace Culture
The path forward isn’t becoming more controlling; it’s becoming more courageous. We may not be able to wave a magic want and have ideal organizational performance but healthy workplace cultures are built one conversation at a time. Making change means:
- Addressing issues early instead of waiting until frustration builds.
- Setting clear behavioural expectations.
- Giving feedback with respect instead of avoiding it.
- Recognizing people who consistently strengthen the team not just those who produce results.
- Modelling the behaviours you want others to follow.
Your people don’t need you to be a perfect leader. They need you to be consistent because this builds trust and psychological safety.
If You’re Not the Leader…
You may be reading this thinking, “That’s exactly what’s happening where I work but I’m not in charge.”
You still have influence. Protect your own standards. Avoid participating in gossip, even when it’s tempting. Choose conversations that build trust instead of division. Set healthy boundaries with people who repeatedly drain your energy.
And remember this: someone else’s behaviour doesn’t have to determine who you become at work.
Protecting your own wellbeing isn’t selfish – it’s leadership, regardless of your title.
Building a Healthy Workplace Culture Starts With People
One of the ideas I speak about most often in my keynotes is this: culture isn’t built through mission statements.
It’s built through everyday human interactions. Difficult conversations, held boundaries, prioritizing courage over comfort…
These seemingly small decisions create workplaces where people feel psychologically safe, valued, and inspired to do their best work.
In a world where technology continues to automate tasks, these deeply human skills are becoming even more valuable.
The ability to build trust, navigate conflict, communicate with emotional intelligence, and create cultures where people genuinely want to stay.
Those are competitive advantages no software can replace.
One Question to Leave You With
Before asking yourself “Who is the most toxic person on our team?”
Ask a different question, “What behaviour have we unintentionally allowed to become normal?”
Because culture rarely changes when one difficult employee leaves. It changes when one courageous leader decides the standard has changed.
If this topic resonated with you, I regularly share practical leadership insights on LinkedIn and Instagram focused on emotional intelligence, workplace wellbeing, and building healthier teams. Whether I’m speaking to organizations, coaching leaders, or facilitating workshops, my goal is always the same: to give people practical tools they can apply immediately – not someday, but today.
I’d love to connect with you there.
With Love,
Julie










