What Every Great Leader Knows About Stress (and Most Still Ignore)

Work isn’t working.

For the global workforce, stress is up, employee engagement is down, and overall well-being is trending in the wrong direction. The warning signs are flashing everywhere. In the most recent Stress in America report, nearly 7 in 10 employees said work is a major source of stress, matching levels we haven’t seen since the early pandemic in May 2020.

And yet, here’s what every great leader knows — and most still ignore:

Stress is contagious. And leaders are the ones spreading it. 

Most of us were never taught about the different types of stress and why those differences matter. Eustress is a form of stress that is positive, motivating, or energizing. It comes from challenges that we perceive as within our capability and meaningful, such as a new project or a race you’ve trained for. Acute stress is the body’s short-term response to a specific stressor or event, such as cramming for a deadline or navigating a tough meeting. Neither of these have long-term detrimental effects.

Chronic stress is different. It’s what happens when negative stress (distress) becomes constant—when the body’s alarm system never shuts off. Instead of returning to baseline, our nervous system keeps pumping out stress hormones designed for responding to emergencies, not email.

Neuroscience is clear: we can’t think creatively, solve complex problems, or access our best ideas when our nervous system is in survival mode. Research from Harvard shows that over time, that constant activation erodes our focus, energy, and health.

Stress spreads quickly, rippling through teams, departments, and entire organizations. Neuroscience calls this emotional contagion: the unconscious spread of feelings from one person to the next.

Stress Isn’t an Emotion – But It Spreads Like One 

While we often describe feeling “stressed” as an emotional state, stress itself is a physiological and psychological response to a perceived threat or challenge. It’s our body’s built-in alarm system, priming us to react quickly. So although stress is a response and not an emotion, it’s contagious like an emotion because it travels the same pathways.

When we say we’re stressed, we’re usually describing the rush of physical changes – like increased heart rate, muscle tension, and a flood of stress hormones – along with the swirl of emotions that accompany them (like fear, anxiety, or frustration).

We pick up on each other’s tension through expressions, tone of voice, posture, and energy shifts – all the same channels emotions use to spread. When someone storms into a meeting, jaw clenched and shoulders tight, our mirror neurons kick in, and our bodies brace as if we’re facing the same threat.

Even if no words are exchanged, our nervous systems sync up and echo that stress response because we’re wired to scan for other’s distress as a way to stay safe. This is where stress spreads like wildfire. In modern workplaces, that often means catching each other’s stress like a cold. And the more authority a person holds, the more contagious their stress becomes. When a leader is stressed, the stress spreads even faster. Our brains are hardwired to pay closer attention to authority figures, scanning their tone, body language, and emotional cues for signs of safety or threat. As a result, when leaders are stressed, everyone feels it.

Facial expressions can synchronize in as little as twenty-one milliseconds. That’s why paying attention to how we show up matters. The energy we carry affects others. And as a leader, that ripple effect can set the tone of a conversation, a meeting, or an entire workplace.

When we stay stuck on high alert and in survival mode, the body doesn’t just feel different – it functions differently. The brain reroutes its energy toward vigilance and protection, making it biologically harder to access presence, connection, and joy.

Stress Spreads, But So Does Joy  

Positive emotions have their own ripple effect. Just like we’re wired to detect threat, we’re wired to notice safety, warmth, and connection. A genuine smile, a deep breath, a calm tone — all help regulate nervous systems. This isn’t about pretending everything is fine or never feeling stressed. That’s not leadership — that’s denial and toxic positivity. Your team doesn’t need you to hide your stress — they need you to manage it, so there’s nothing to hide.

A quick joke before a meeting? That boosts dopamine.

A moment of appreciation? That triggers oxytocin — the bonding and trust chemical.

A culture of celebrating wins? That builds resilience and engagement.

In group settings, joy doesn’t just feel good — it does good. It unlocks perspective, problem-solving, and collaboration.

This is one of the biggest blind spots in leadership today: your stress is limiting not only your own performance; it’s limiting your team’s performance, too.

The Ultimate Leadership Opportunity 

When leaders are supported to manage their own stress, everyone around them benefits. They think more clearly. They make better decisions. Their teams can focus on their work instead of absorbing the leader’s stress or trying to guess what mood is walking in the door.

Work isn’t working — not the way we’re doing it now. But leaders aren’t the problem. Stress is the problem. Most workplaces are full of good people doing their best while running on empty, hoping no one notices.

When leaders have the tools and space to care for their well-being — and help their teams do the same — everything shifts. Stress goes down. Engagement goes up. People feel human again.

And that’s how work can work again.

Written by Amy Leneker.