Executive Dysfunction at Work: When Capability Looks Like Inconsistency

 Why understanding executive function in the workplace matters for leaders, HR, Learning & Development and DEI

There is a particular kind of inconsistency at work that many leaders find difficult to completely understand. 

It can be confusing to observe an employee leading complex strategy meetings with confidence, solving problems others have been wrestling with for weeks and bringing exceptional insights to the projects they are working on. 

Yet, then they seem to struggle replying to emails. 

These are the team members that can produce outstanding work one week and miss a seemingly straightforward deadline the next.

They can be intelligent, experienced, creative and deeply committed to their role - and still find themselves staring at a task they know they need to start, unable to begin.

From the outside, this can look like a performance problem.

But what if inconsistency isn't always telling us what we think it is?

For executives, HR leaders, Learning & Development professionals and DEI teams, understanding executive dysfunction at work offers a different lens through which to consider performance, neurodiversity and workplace design.

Sometimes capability hasn't disappeared.

Access to it has changed.

Key Takeaways

• Executive function is central to workplace performance. It supports working memory, impulse control and cognitive flexibility, with higher-order skills such as planning and problem-solving building on these cognitive processes.

• Executive dysfunction at work can look like a performance or motivation problem. It may appear as procrastination, difficulty initiating tasks, forgetfulness, overwhelm, missed deadlines or inconsistent performance.

• ADHD symptoms are strongly associated with executive-function challenges, but executive function is relevant to every employee. This does not mean that everyone "has a little ADHD."

• Capacity is not constant. Research indicates that stress can affect executive functions including working memory and cognitive flexibility.

• Context matters. Unclear priorities, excessive cognitive load, interruptions, poorly designed processes and communication demands can increase the executive-function demands of work.

• Understanding is not the opposite of accountability. Better understanding can help managers identify appropriate support while maintaining clear expectations.

• Neuroinclusion is an organisational issue, not simply an individual adjustment issue. HR, L&D, DEI and senior leaders can examine whether workplace systems enable different brains to perform effectively.

• A better leadership question may be: "What is making it harder for this person to access their capability right now?"

What is executive function?

Executive functions are a family of cognitive processes that help us regulate thoughts and actions in pursuit of goals. 

A widely used model describes three core executive functions: working memory, inhibitory control and cognitive flexibility. More complex capabilities, including planning, reasoning and problem-solving, build upon these processes.¹

In practical workplace terms, executive function helps us:

• hold information in mind while using it

• decide what deserves our attention

• resist distraction

• shift between tasks 

• adapt when priorities change

• plan and organise work

• solve problems

• regulate responses

• move from intention into action.

Think about how often those demands appear in an ordinary working day.

A manager leaves a meeting carrying six actions in their head, moves immediately into a Teams call, receives an urgent message midway through it, remembers a deadline they haven't addressed and then tries to return to the document they were writing 90 minutes earlier.

We may call that "work".

The brain experiences a series of cognitive demands.

This is why I often describe executive function as part of the hidden infrastructure of human performance.

When it is working well, we rarely notice it.

When access to those skills becomes difficult, we notice the behaviour.

What does executive dysfunction look like at work?

Executive dysfunction refers to difficulty effectively using executive-function processes.

At work, that might look like:

• knowing a task is important but struggling to start it

• repeatedly underestimating how long something will take

• losing track of verbal instructions

• becoming overwhelmed when several priorities compete

• difficulty moving between tasks

• forgetting an action agreed during a meeting

• struggling to break a large project into manageable steps

• missing details despite understanding the bigger picture

• appearing highly productive at some times and significantly less so at others.

The difficulty is that workplaces rarely label these behaviours "executive-function demands".

Instead, we interpret what we can see.

"They need to be more organised."

"They aren't taking enough ownership."

"We've already discussed this."

"They're capable, so I don't understand why they can't just do it."

And that last sentence is particularly important.

Because knowing how to do something and being able to consistently access the cognitive processes required to do it are not necessarily the same thing.

Capability and capacity are different

One of the ideas at the centre of my work is:

Capability hasn't necessarily changed. Available capacity has.

Capability describes what someone knows, understands or has the skill to do.

Capacity is more dynamic.

It asks: What cognitive and emotional resources are available to access that capability under these conditions, today?

Research supports the broader principle that executive function is sensitive to context. A meta-analysis examining acute stress found impairment in working memory and cognitive flexibility, although effects on inhibition were more nuanced.² A later review similarly emphasised that the relationship between stress and executive function varies according to individual, biological and task-related factors.³

That nuance matters.

We shouldn't replace one simplistic explanation -"they aren't trying" - with another -"stress always causes executive dysfunction."

Human performance is more complex than that.

We can, however, recognise that a person's cognitive performance does not exist independently of the conditions surrounding them.

Stress matters.

So can sleep, nutrition, hormonal changes, emotional demands, competing priorities and cognitive load.

The World Health Organization describes burnout specifically as an occupational phenomenon resulting from chronic workplace stress that has not been successfully managed, characterised by exhaustion, increased mental distance or cynicism, and reduced professional efficacy.⁴

For leaders, this creates an important distinction:

Past capability does not guarantee identical access to that capability under every set of conditions.

ADHD, neurodiversity and executive dysfunction in the workplace

Executive function becomes particularly important when we consider ADHD symptoms in the workplace.

Research has consistently identified executive-function difficulties in adults with ADHD, although ADHD is complex and cannot be reduced to executive dysfunction alone.⁵ Studies have also found relationships between ADHD, executive-function difficulties and occupational functioning.⁶

This can help explain a pattern many professionals with ADHD, or ADHD-like challenges describe:

"I know I can do this. So why can't I just do it?"

The answer isn't necessarily a lack of intelligence, commitment or ambition.

This is where an important clarification needs to be made.

This does not mean everyone "has a little bit of ADHD."

They don't. 

ADHD is a neurodevelopmental condition.

Every human being, however, relies on executive functions.

That makes executive function a valuable bridge between conversations about ADHD at work, neurodiversity in the workplace and human performance more broadly - without erasing the very real differences experienced by neurodivergent people.

Why this matters for HR, DEI and organisational leaders

Neuroinclusion cannot be reduced to helping individual neurodivergent employees become better at coping with systems that were never designed with cognitive difference in mind.

The CIPD's guidance on neuroinclusion recommends looking at workplace processes, management practices, environments and the way work itself is organised. It also emphasises flexibility, communication preferences, meeting practices and person-centred support.⁷

That shifts the organisational question.

Instead of only asking:

"How do we help this employee perform better in our existing system?"

we can also ask:

"Is there anything about our existing system making good performance unnecessarily difficult?"

Consider:

How clear are priorities?

How many communication channels must employees monitor?

How much uninterrupted thinking time is available?

How frequently are people required to switch between tasks?

Are meetings creating clarity - or more cognitive load?

Are verbal instructions supported by written information when useful?

Do employees understand what "good" looks like?

How safe is it to ask for clarification or support?

Are managers equipped to have conversations about neurodiversity and workplace adjustments?

CIPD's research found that only 56% of surveyed employers agreed or strongly agreed that employees with HR responsibilities felt capable and confident supporting neurodivergent individuals at work.⁸

That suggests neuroinclusion cannot sit solely within policy.

Managers and leaders need practical capability too.

What this means for Learning & Development

There is an equally important implication for L&D.

If executive function influences attention, working memory, cognitive flexibility and goal-directed behaviour, then it also matters when we ask people to learn.

Cognitive load theory starts from the principle that working-memory capacity is limited; when the cognitive demands of learning become excessive, learning can be impeded.⁹ Research into workplace instruction similarly emphasises the importance of evidence-based instructional principles in supporting learning and transfer to job performance.¹⁰

For L&D leaders, this invites a useful question:

Are we designing learning around how humans actually process information - or around how much content we want to deliver?

More content does not automatically create more learning.

Neither does a beautifully designed slide deck.

Inclusive learning design might mean reducing unnecessary information, creating clearer structure, giving people opportunities to process and apply what they are learning, providing information in accessible formats and considering the cognitive demands of the learning environment itself.

This isn't about creating a separate learning experience for every brain.

It's about designing learning experiences that place fewer unnecessary barriers between the learner and the outcome.

When we mistake friction for failure

Imagine an experienced employee who has been asked to lead an important new project.

They haven't started.

The deadline is approaching.

Their manager has reminded them twice.

The easy interpretation is:

They need to take more ownership.

Now look beneath the behaviour.

The brief is broad and ambiguous.

There are six stakeholders with different expectations.

The employee has three other "urgent" priorities.

Their calendar contains 24 hours of meetings that week.

There is no agreed first milestone.

They are also navigating a significant change outside work that their manager knows nothing about.

If that employee also has ADHD, some of those demands may interact with existing executive-function challenges.

None of this means the project no longer matters.

It doesn't mean the deadline disappears.

It doesn't mean the manager should avoid accountability.

It means we now have more useful information.

Instead of repeating:

"You need to get this started."

a manager might ask:

"What's getting in the way of starting?"

That conversation could uncover ambiguity, competing priorities, working-memory load, insufficient resources, a need for an adjustment - or something else entirely.

Now there is something to work with.

Understanding gives us somewhere to intervene.

Understanding executive function does not mean lowering standards

This is an important distinction for senior leaders.

Creating a neuroinclusive workplace does not require organisations to abandon performance standards.

Understanding executive dysfunction isn't about excusing every missed deadline.

And psychological safety does not mean the absence of expectations.

The opportunity is to make accountability more intelligent.

For example, managers can:

• clarify which priority comes first rather than declaring everything urgent

• define the first step of an ambiguous project

• break long deadlines into visible milestones

• document important actions rather than relying entirely on memory

• reduce unnecessary task switching

• protect periods of focused work

• ask employees what helps them work effectively rather than assuming

• explore reasonable adjustments where appropriate

• distinguish a skill gap from a capacity, environment or executive-function barrier.

The goal isn't to remove responsibility.

It's to understand what makes successful execution more likely.

From neurodiversity awareness to workplace design

There has been significant growth in organisational awareness of neurodiversity.

But awareness is only the beginning.

CIPD's neuroinclusion research found a gap between organisational priorities and practice: while 70% of surveyed employers said EDI was a critical priority and 83% said employee wellbeing was, 60% said neuroinclusion was a focus and only 33% reported it being included in their EDI strategy or action plan.⁷

For executives, HR and DEI leaders, the next stage is therefore not simply more awareness.

It is translating awareness into the way work is designed and managed.

That means examining recruitment.

Leadership.

Communication.

Learning.

Performance management.

Technology.

Meetings.

Workload.

Job design.

Psychological safety.

And the everyday assumptions we make about what "good performance" should look like.

The question becomes less:

"How do we make neurodivergent people fit the workplace?"

and more:

"How do we create workplaces where different brains have a fair opportunity to contribute and perform?"

Executive function is a human performance conversation

My work began deeply rooted in ADHD advocacy and executive function.

The more I have worked in this space, the more interested I have become in the wider question it reveals:

What does a human brain need in order to do its best thinking?

Executive dysfunction gives us a powerful lens through which to explore that question.

Because when a capable person is struggling, there may be an individual support need.

There may be an executive-function challenge.

There may be a leadership issue.

There may be excessive cognitive load.

There may be emotional load that nobody else can see.

Or there may be unnecessary friction built into the work itself.

Often, more than one of these things is true.

The role of good leadership isn't to diagnose employees.

It's to become more curious about the conditions surrounding performance.

A good leader will become curious, and start to recognise that asking curiosity driven questions is the key to improved outcomes. 

Rather then:

"They're clearly capable. Why can't they just be more consistent?"

try a different, more curious question, such as:

"What might be making it harder for them to access their capability right now?"

There may still be a difficult performance conversation ahead, however it will be a better-informed conversation. 

Why? Because:

Awareness changes what we know.

Understanding changes what we do.

And human performance begins with understanding.

Free Guide: Executive Dysfunction at Work

When Capability Looks Like Inconsistency: A Manager's Guide to Executive Function at Work

I've created a complimentary guide for executives, HR and People & Culture professionals, L&D and DEI leaders, and people managers who want to better understand what's happening beneath procrastination, overwhelm, forgetfulness and inconsistent performance.

The guide explores executive function at work and practical ways managers can reduce unnecessary friction while maintaining clear expectations and accountability.

DOWNLOAD THE FREE EXECUTIVE DYSFUNCTION AT WORK GUIDE

Frequently Asked Questions About Executive Dysfunction at Work

What is executive dysfunction at work?

Executive dysfunction at work refers to difficulties using the cognitive processes needed to organise and direct goal-focused behaviour. Depending on the individual and context, this can affect working memory, inhibition, cognitive flexibility and higher-order activities such as planning and problem-solving. At work, difficulties may appear as procrastination, trouble initiating tasks, forgetfulness, overwhelm, difficulty prioritising or inconsistent performance.

What does executive dysfunction look like in the workplace?

Executive dysfunction can look different from person to person. Examples can include difficulty starting complex tasks, losing track of actions, struggling with competing priorities, poor time estimation, difficulty switching between activities, becoming overwhelmed by ambiguity, or knowing what needs to be done but struggling to translate intention into action. These behaviours should not automatically be attributed to executive dysfunction; managers should remain curious rather than trying to diagnose employees.

Is executive dysfunction the same as ADHD?

No. Executive-function difficulties are strongly associated with ADHD, but ADHD and executive dysfunction are not interchangeable. ADHD is a neurodevelopmental condition involving a broader pattern of symptoms and impairment. Executive functions are cognitive processes used by everyone.

Does everyone have ADHD traits when they are stressed?

No. Stress can affect aspects of executive function, but that does not mean a person has ADHD or "a little bit of ADHD." ADHD is a neurodevelopmental condition. Research does, however, indicate that stress can influence executive functions such as working memory and cognitive flexibility.² ³

Can an employee be highly capable and still experience executive dysfunction?

Yes. An employee's knowledge, intelligence or professional capability does not automatically mean they will experience identical access to executive-function processes under every condition. ADHD, stress, cognitive load and environmental demands may affect performance in different ways. The cause of inconsistent performance should therefore be explored rather than assumed.

How can managers support executive function at work?

Support should be individualised, but useful approaches may include clearer priorities, defined next actions, written follow-up after important conversations, visible milestones, protected focus time, reduced unnecessary task switching and open conversations about what helps the individual work effectively. Neurodivergent employees may also require individual workplace adjustments.

Is supporting executive function the same as lowering performance expectations?

No. Understanding barriers to performance can coexist with clear expectations and accountability. The aim is to identify what may be preventing someone from meeting an agreed expectation and determine what support, clarification, adjustment or change is appropriate.

Why should HR and DEI leaders understand executive function?

Executive function intersects with performance management, neuroinclusion, employee wellbeing, workplace adjustments, communication and job design. Understanding it can help HR and DEI leaders examine whether organisational processes inadvertently create unnecessary barriers for different thinkers.

Why is executive function relevant to Learning & Development?

Executive function is relevant to learning because working memory, attention, cognitive flexibility and other cognitive processes affect how people engage with and apply information. L&D professionals can consider cognitive load and evidence-based instructional principles when designing learning experiences, rather than assuming that more content automatically creates more learning.

What is a neuroinclusive workplace?

A neuroinclusive workplace consciously considers differences in information processing, communication and ways of working. CIPD guidance emphasises both person-centred support and examination of organisational practices, workplace environments, management approaches and the design of work itself.⁷

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References

1. Diamond, A. (2013). Executive Functions. Annual Review of Psychology, 64, 135–168.

2. Shields, G. S., Sazma, M. A., & Yonelinas, A. P. (2016). The effects of acute stress on core executive functions: A meta-analysis and comparison with cortisol. Neuroscience & Biobehavioral Reviews, 68, 651–668.

3. Plieger, T., et al. (2020). Stress & executive functioning: A review considering moderating factors. Neurobiology of Learning and Memory, 173, 107254.

4. World Health Organization. Burn-out an occupational phenomenon: International Classification of Diseases (ICD-11).

5. Boonstra, A. M., Oosterlaan, J., Sergeant, J. A., & Buitelaar, J. K. (2005). Executive functioning in adult ADHD: A meta-analytic review. Psychological Medicine, 35(8), 1097–1108.

6. Barkley, R. A., & Murphy, K. R. (2010). Impairment in occupational functioning and adult ADHD: The predictive utility of executive function ratings versus executive function tests. Archives of Clinical Neuropsychology, 25(3), 157–173.

7. CIPD. (2024). Neuroinclusion at work.

8. CIPD. (2024). Neuroinclusion at work: The role of people professionals, EDI specialists and leaders.

9. de Jong, T. (2010). Cognitive load theory, educational research, and instructional design: Some food for thought. Instructional Science, 38, 105–134.

10. Salas, E., et al. (2021). The Science of Workplace Instruction: Learning and Development Applied to Work. Annual Review of Organizational Psychology and Organizational Behavior.