Sixty-six percent of US employees report some form of burnout right now. That number alone is sobering. But the more interesting finding from Deloitte’s 2025 Workforce Intelligence Report is what’s actually driving it. For the first time, mental fatigue, cognitive strain, and decision friction have surpassed workload volume as the leading indicators of burnout.
In other words, it isn’t the hours. It’s what’s happening inside the hours.
Employees in the report spent more than 60 percent of their working time navigating fragmented systems, unclear responsibilities, and high friction workflows. Translation: they aren’t burning out from doing too much work. They’re burning out from the cognitive cost of figuring out what work to do, who owns what, and which of their twelve open tabs holds the answer they need.
This shifts the conversation about workplace wellbeing in a significant way.
Why most wellbeing programs miss the point
I work with executive teams across a range of industries, and a pattern keeps showing up. Organizations roll out meditation apps, mental health days, and wellness stipends, then wonder why engagement scores barely move. Recent Gallup data shows roughly 21 percent of employees worldwide are engaged at work, with another 62 percent simply not engaged. Wellbeing budgets are climbing while wellbeing outcomes stay flat.
The reason is that most programs treat burnout as something the individual employee needs to manage. Take a yoga class. Set a boundary. Use your PTO. These are reasonable suggestions, but they don’t touch the actual driver. If the architecture of someone’s day is fragmented and unclear, no amount of personal recovery time fixes it. They walk back into the same maze on Monday morning.
When cognitive load is the problem, the fix sits with leaders, not with employees.
What leaders can actually do
The most effective interventions I’ve seen are unglamorous and structural. They look like this.
Audit decision rights. When teams don’t know who decides what, every decision becomes a meeting, an email chain, or a cycle of half made calls that get revisited a week later. A simple RACI exercise (responsible, accountable, consulted, informed) across the top fifteen recurring decisions in a team can free up hours per week per person. I’ve watched this single intervention move team energy more than a six month wellness initiative.
Reduce tool sprawl. Most knowledge workers are now toggling between eight to twelve applications a day. Each switch carries a cognitive cost. You don’t need to consolidate everything, but you do need to be honest about which tools earn their keep. Ask each team to nominate one tool they could drop without losing anything important. The answers are often telling.
Protect deep work. Cognitive strain compounds when fragmented attention becomes the norm. Teams that consistently outperform tend to have explicit norms around focus time, asynchronous communication, and meeting hygiene. None of this is new, but the discipline to actually enforce it is rare.
The manager multiplier
Here is the finding that should land hardest with every senior leader reading this. Gallup’s 2025 Global Workplace Report found that managers account for up to 70 percent of the variance in team engagement and wellbeing. Seventy percent. That isn’t a rounding error.
Translation: you can run the best wellness program in your industry, but if your managers are unclear, reactive, or absent, the program will not save you. And if your managers are clear, calm, and consistent, you can probably get away with a worse wellness program than you’d like to admit.
In my work with senior leadership teams, the question I keep returning to is this: are we equipping our managers to absorb complexity on behalf of their teams, or are we passing the complexity straight through? The answer determines whether burnout shows up in your engagement survey six months from now.
Where this leaves us
Workplace wellbeing in 2026 is less about benefits and more about clarity. Less about resilience training and more about decision architecture. Less about managing the symptoms of cognitive overload and more about removing the cognitive noise in the first place.
That’s harder work than rolling out a new app. It’s also the work that actually moves the needle.
If you’re a senior leader trying to figure out where the cognitive strain is concentrated in your organization, and what to do about it, this is the kind of work I help executive teams with. You can learn more about partnering with me at drtessbreen.com/work-with-me.
