The Toxic High Performer

Dana leads a high-performing operations team in a fast-growing organization. The tempo is high. Expectations are clear. Results drive everything. And on her team, one person stands above everyone else.

Marcus.

Marcus outperforms the rest of the team by a wide margin — sometimes by 30 to 40 percent. Clients request him by name. Senior leadership points to his numbers as the benchmark. When quarterly results are discussed, his name always comes up.

If performance alone defined value, Marcus would be the model employee.

But culture lives in the margins, not the metrics.

In meetings, Marcus interrupts people and corrects them publicly. He sends blunt emails late at night critiquing teammates and copies leadership. He withholds information until the last moment so he stays ahead. When asked to mentor junior employees, he shrugs it off.
“I’m not here to carry people.”

At first, it’s dismissed as intensity. Competitiveness. Drive.

But slowly, the team begins to change.

People hesitate before speaking in meetings. Collaboration tightens. Information stops flowing naturally. A few strong employees begin exploring transfers. One junior employee tells Dana quietly,
“I feel like I’m always one mistake away from being embarrassed.”

Still — the numbers are excellent.

Senior leadership notices performance, not tension. During one conversation, Dana’s supervisor tells her,
“He’s not the easiest personality… but he delivers. We need that right now.”

Weeks pass.

Then during a major project review, Marcus publicly blames a teammate for a delay. He implies she dropped the ball. She says nothing in the meeting — but afterward she walks into Dana’s office and closes the door.

“I can handle pressure,” she says.
“I can’t handle being thrown under the bus.”

Two days later, she submits a transfer request. She’s one of the most promising future leaders on the team.

Now Dana sits with a reality she can’t ignore.

Her top performer is producing results.
And simultaneously draining trust from the team.

If Marcus stays exactly as he is, the team will likely keep hitting its numbers — at least for a while.
If Marcus leaves, production drops immediately.
If she confronts him and he reacts badly, she risks losing her strongest producer.
If she does nothing, she may slowly lose everyone else.

There is no policy manual for this moment.
No spreadsheet that measures cultural erosion in real time.
Just a leader staring at competing priorities:

Performance.
People.
Short-term wins.
Long-term health.

Dana schedules a one-on-one meeting with Marcus.

He walks in confident, assuming it’s another conversation about targets or upcoming projects.

Instead, the conversation turns toward team dynamics. Trust. Impact. Perception.
For the first time, Marcus hears directly that his presence may be affecting the team in ways that don’t show up on performance reports.

He listens.
Then he pushes back.
Then he asks a question:

“So what exactly are you saying?”

By the mid-1990s, climbing Mt. Everest had evolved from elite expeditionary mountaineering into a commercial enterprise. Guiding companies such as Adventure Consultants, led by renowned climber Rob Hall, charged high fees to lead paying clients, many with limited high-altitude experience, to the summit of the world’s tallest mountain.

Climbers spent weeks acclimatizing to extreme altitude by rotating between Base Camp and progressively higher camps (Camp I through Camp IV). The summit push from Camp IV required precise timing, disciplined decision-making, and strict adherence to safety protocols, particularly turnaround times designed to ensure descent before nightfall and severe weather. The expedition included climbers of widely varying experience levels. Some were highly skilled mountaineers; others were relatively inexperienced clients heavily dependent on guides for survival. All were physically deteriorating from altitude sickness, weight loss, and exhaustion.

On summit day, Rob Hall set a firm 2:00 p.m. turnaround time. Any climber not at the summit by then was required to descend, regardless of proximity to the top. This rule was intended to prevent climbers from being trapped in darkness or storms during descent. However, as summit attempts unfolded, the turnaround time was not enforced. Several climbers, including Hall and client Doug Hansen, continued toward the summit well past the deadline, reaching it as late as 4:00 p.m. At the same time, another guided team led by Scott Fischer was also pushing toward the summit behind schedule. Shortly after these delayed summits, a violent storm struck the mountain.

The late summit attempts left multiple climbers exposed high on the mountain as the storm intensified. Key failures compounded the situation:

·       Climbers ran out of supplemental oxygen.

·       Communication between teams became fragmented.

·       Visibility collapsed in the blizzard.

·       Exhausted climbers could not descend without assistance.

Several climbers became stranded near the summit. Rescue attempts were heroic but costly. Guides and Sherpas risked and, in some cases, lost their lives while attempting to save clients and fellow climbers.

Some stranded climbers died where they fell. Others were presumed dead and left behind. In one extraordinary case, climber Beck Weathers, left for dead, regained consciousness and staggered back to camp, ultimately surviving despite severe frostbite and multiple amputations.

By the end of the season, twelve climbers had died on Everest.

Case Study: Tom is widely respected. He’s known as fair, mission-focused, and deeply loyal to his people. The kind of leader others want to work for.

One of his team members, Jake, is struggling. Divorce. Custody battle. Financial stress. Jake’s performance has slipped, but everyone knows why. He’s still trying. He’s just not at his best.

There’s a high-visibility project coming up. If it fails, the entire team looks bad. If it succeeds, it protects funding and positions the department well for the next year. Jake is supposed to lead a critical piece of it.

Tom believes in second chances. He also believes in protecting his people. Quietly, without telling senior leadership, Tom shifts some of Jake’s responsibilities to another team member and backfills Jake’s deliverables himself late at night. On paper, it looks like Jake is still leading. In reality, Tom is carrying him.

The project succeeds. Leadership above Tom is thrilled. Jake keeps his role. The team is spared scrutiny. But a few things start to surface. The teammate who picked up the slack feels resentful. They weren’t asked. They were told. They see Jake still getting credit.

Jake feels relief… but also shame. He knows he’s being covered for. He becomes less confident, not more. Tom feels justified. He protected his people. He kept the mission on track.

But now he’s tired. He’s carrying work that isn’t his. He’s managing perceptions. He’s protecting a story that isn’t fully true. No policy was technically broken. But something is off.

Season 2 finale as we discuss what it takes to be a good leader even better.

Here is the link Bill refered to on empthy - https://www.youtube.com/watch?v=1Evwgu369Jw

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