Burnout 101
Other Pages in this Series
Lack of Control and Recognition
Fairness and Values and Burnout
The Latest Burnout Statistics
The Latest Research on Burnout
Jennifer Moss is the author The Burnout Epidemic, published by Harvard Business Press in 2021.
How Workload Effects Burnout
Burnout Cause #1: Workload - How It Fuels the Burnout Epidemic
Burnout isn’t just about being tired. It’s not the result of one bad week or a particularly demanding project. Burnout is systemic, persistent, and deeply intertwined with how we think about work itself. While many factors contribute to burnout—lack of autonomy, unfair treatment, the erosion of workplace culture—one of the most insidious and overlooked causes is workload.
The sheer volume of work expected of employees today is staggering. The modern workplace is defined by an ever-expanding list of responsibilities, aggressive deadlines, and the pressure to perform at unsustainable levels. It’s no longer just about doing a job well—it’s about doing more than what is reasonable, continuously, without reprieve. This relentless drive toward productivity has become the default setting in workplaces around the world. And it is burning people out at unprecedented rates.
The Misconception of Productivity and the Reality of Overwork
We glorify the grind. We celebrate the employees who stay late, who take on extra assignments, who go above and beyond. But the cost of this culture is steep. What begins as high performance can quickly spiral into exhaustion. Employees who take pride in their ability to handle heavy workloads often don’t realize they’re in danger until they’re deep in burnout’s grip. The transition from engaged to depleted happens slowly—until, suddenly, they can’t do it anymore.
The misconception that burnout only affects people who dislike their jobs is dangerous. Some of the most engaged, passionate employees are the ones who burn out the fastest. They say yes to every request, they push themselves beyond their limits, and they ignore the warning signs. But motivation doesn’t shield the body from exhaustion. Passion does not override the physiological consequences of chronic stress. And yet, organizations continue to pile more on, assuming that committed employees will find a way to make it work.
The Science of Overwork: What It Does to Our Minds and Bodies
Burnout is not just a feeling—it’s a measurable, physical response to chronic stress. Excessive workloads trigger a cascade of hormonal changes in the body, raising cortisol levels and keeping employees in a near-constant state of fight-or-flight. This state, meant to help us react quickly to immediate threats, was never designed to be sustained for weeks, months, or years. The consequences are profound.
Employees facing heavy workloads experience cognitive fog, forgetfulness, and difficulty concentrating. Decision-making suffers. Creativity is stifled. The very qualities that organizations rely on—innovation, problem-solving, collaboration—begin to deteriorate under the weight of excessive expectations. And yet, rather than recognizing these as red flags, many workplaces push harder. Employees who struggle are labeled as inefficient or incapable when in reality, they are simply overwhelmed.
Physically, the toll is just as severe. Chronic overwork has been linked to increased risk of heart disease, high blood pressure, weakened immune function, and digestive issues. Sleep disturbances become the norm, as stress prevents the body from fully decompressing. The irony is clear: employees are pushed to work harder and longer, but their ability to perform declines in direct proportion to their exhaustion. In the end, overwork doesn’t just harm individuals—it compromises the very productivity it is meant to enhance.
The Historical Roots of Overwork: A Legacy That Won’t Die
The idea that work should be exhausting is deeply embedded in our culture. For centuries, labor has been equated with suffering. From factory workers in the Industrial Revolution to knowledge workers in today’s high-pressure corporate environments, the expectation remains the same: real work should hurt. If it doesn’t, you’re not trying hard enough.
Fast forward to today, and while the work itself has changed, the underlying dynamic has not. The expectation to push ourselves beyond our limits is still present, just in a different form. Instead of physical labor breaking our bodies, cognitive overload is wearing down our minds. We may not be carrying stone blocks, but we are carrying an invisible weight just as crushing.
The New Normal: An Always-On Culture
Technology was supposed to make work easier. Instead, it has made work infinite. The boundary between professional and personal life has become razor-thin, with emails, Slack notifications, and project updates following us long after we leave our desks. The expectation that employees should always be available—always “on”—has created an environment where work is inescapable.
During the pandemic, this problem reached new heights. Data from multiple sources showed that the average workday increased by up to three hours in some countries. Meetings multiplied, emails piled up, and employees found themselves working late into the night just to keep up. The very idea of a stopping point became obsolete.
And yet, despite all this, the narrative remained unchanged: if you’re struggling, it must be a personal failing. You must not be managing your time well. You must not be resilient enough. Rarely do we acknowledge the obvious truth—there is simply too much work.
The Psychological Toll of Perpetual Workload
One of the most insidious effects of workload-induced burnout is the erosion of self-worth. Employees begin to equate their value with their output. If they can’t keep up, they feel inadequate. This cycle is devastating. People who once took pride in their skills and contributions begin to feel like they are drowning in tasks that no longer bring them any sense of fulfillment.
Even worse, burnout affects interpersonal relationships. Irritability increases. Patience wears thin. The ability to engage with colleagues, friends, and family diminishes. It becomes harder to enjoy moments of rest because the mind remains tethered to work, cycling through to-do lists and unfinished projects. Recovery feels impossible because there is no real opportunity for rest.
And when a crisis hits—whether it’s economic uncertainty, a leadership shake-up, or a global pandemic—the problem intensifies. Suddenly, what was already an unsustainable workload becomes a full-blown emergency. Employees who were barely holding on find themselves expected to do even more with even less. The breaking point arrives. And yet, organizations still act surprised when people walk away, unable to endure it any longer.
When Will It Be Enough?
If history has shown us anything, it’s that the limits of human endurance are not infinite. The idea that people can endlessly stretch their capacity without consequence is a myth. Yet, it remains one of the most pervasive lies in corporate culture.
We cannot continue to pretend that burnout is an individual problem, solvable with mindfulness apps and stress management techniques. Burnout is a systemic issue, driven largely by excessive workload. Until we acknowledge that reality, the cycle will continue. Employees will continue to suffer. Organizations will continue to lose their most talented people. And we will keep wondering why, despite all our efforts, burnout remains an epidemic.
Because the truth is simple: we don’t have a burnout problem. We have a workload problem.