by Ellen Duffy-Lueb, Founder & CEO of Reclaim Your Control
Every day, leaders and employees make hundreds of decisions.
Some are significant, shaping strategy, budgets, or people. Others appear almost insignificant on their own: deciding which email to answer first, responding to a last-minute request, switching between competing priorities, or determining whether a meeting really requires their attention.
Individually, these decisions may seem minor. Collectively, they place a constant demand on one of our most valuable resources: our mental capacity.
This phenomenon is known as decision fatigue. While it is often discussed in psychology, it receives far less attention in organisations than topics such as resilience, engagement, or wellbeing. Yet it may be one of the hidden drivers of reduced performance, poorer judgement, and eventually, chronic exhaustion.
The question is not simply how many hours people work. It is how many unnecessary decisions they are expected to make while doing that work.
Decision-Making Is Not Unlimited
Many organisations still operate as though attention, focus, and decision-making capacity are unlimited resources. In reality, every decision requires cognitive effort.
Throughout a typical working day, employees are constantly evaluating priorities, responding to interruptions, adapting to changing requests, and deciding where to direct their attention next.
None of these decisions are inherently problematic. The challenge arises when they become continuous.
By the end of the day, people are often not physically exhausted as much as they are mentally depleted. Decisions that would have felt straightforward in the morning suddenly require more effort, concentration declines, and reactive thinking begins to replace thoughtful judgement.
This is not a question of motivation. It is a question of cognitive capacity.
When Organisations Create Unnecessary Decision Load
Some level of complexity is unavoidable in modern work. Markets change, customer needs evolve, and unexpected situations will always arise.
However, organisations also create decision load that is entirely preventable.
This often happens through everyday ways of working, such as:
- Constantly shifting priorities
- Unclear roles or decision ownership
- Frequent context switching between unrelated tasks
- Excessive meetings with unclear outcomes
- Processes that require unnecessary approvals
- Expectations of continuous responsiveness
Each of these may appear relatively small in isolation. Together, they create an environment in which employees spend a significant portion of their mental energy navigating work rather than actually doing it.
High Performers Are Often the Most Affected
Ironically, decision fatigue often impacts the very people organisations rely on most.
High performers tend to be trusted with more responsibility, involved in more decisions, and asked to solve increasingly complex problems. They are also more likely to step in when priorities become unclear or workloads increase.
Over time, this creates a hidden accumulation of cognitive demand.
Because these individuals are capable and committed, the effects may remain invisible for quite some time. They continue delivering results, often compensating through experience, dedication, or longer hours.
Eventually, however, even the most capable professionals reach a point where mental capacity becomes the limiting factor.
This is one of the reasons sustainable performance cannot depend solely on individual resilience or willpower.
Reducing Friction Instead of Increasing Effort
One of the most effective ways to improve performance is not necessarily to encourage people to try harder. It is to reduce the amount of unnecessary mental effort their work requires.
This means asking different organisational questions. Instead of asking:
“How can we help people become more productive?”
We might ask:
“Where are we making people spend mental energy that adds little value?”
Often, small improvements can have a significant impact:
- Clarifying priorities before work begins
- Reducing unnecessary approvals
- Establishing clearer decision ownership
- Protecting time for focused work
- Creating routines that reduce repetitive decision-making
These changes do not eliminate complexity. They simply remove unnecessary friction.
Designing Work for Sustainable Performance
Much of the conversation around performance still focuses on motivation, resilience, and engagement. These factors matter.
But they cannot compensate indefinitely for environments that continually consume people’s cognitive resources.
Sustainable performance is not created by expecting people to exercise extraordinary willpower every day.
It is created by designing work in ways that allow people to direct their mental energy toward the decisions that matter most.
For HR leaders, this represents an important shift in perspective.
Rather than asking only how to support employees when they become overwhelmed, organisations can begin by examining how everyday work is designed.
Where are people making decisions that could be simplified?
Which processes create unnecessary complexity?
What expectations quietly compete for employees’ attention throughout the day?
These questions move the conversation beyond individual coping strategies and towards organisational design.
A Better Use of Mental Energy
Pressure will always exist. Important decisions will always need to be made.
The goal is not to eliminate challenge, but to ensure that people’s mental capacity is spent on meaningful work rather than unnecessary complexity.
Because sustainable performance is not built by asking people to use more willpower.
It is built by creating systems that require less of it.
About the author
Ellen Duffy-Lueb is an award-winning leadership and energy strategist and the founder of Reclaim Your Control. She works with organisations and leaders to prevent burnout and enable sustainable high performance, drawing on experience in global corporate environments and evidence-based stress and energy management.
