Many adults describe the same confusing experience at work.

On the surface, they are capable and intelligent.
They may even perform very well in some parts of their job.

But certain situations feel strangely overwhelming.

Meetings become exhausting.
Emails pile up faster than they can respond.
Small administrative tasks feel impossible to start.
A piece of feedback suddenly triggers a wave of emotion.

Afterwards they may wonder:

“Why do I react like this when other people seem fine?”

For many people, the answer lies in the nervous system and how it processes stress, sensory input, and cognitive demands.

When we look at neurodiversity through a nervous system lens, many workplace struggles begin to make much more sense.

Why Workplaces Can Overload the Nervous System

Modern workplaces place constant demands on the brain.

Think about a typical workday:

• dozens of emails

• multiple tasks running at once

• meetings with competing conversations

• background noise from phones or keyboards

• fluorescent lighting

• pressure to respond quickly

• switching between projects and priorities

Your brain is processing all of this simultaneously.

For many neurotypical brains, the nervous system can filter a lot of this stimulation automatically.

But for many neurodivergent people, particularly those with ADHD or autism, the filtering system works differently.

The brain may notice more sensory information and struggle to prioritise what matters.

Over time this creates nervous system overload.

What Sensory Overload Actually Is

Sensory overload occurs when the brain receives more sensory input than it can comfortably process.

This input can come from:

• sound

• light

• movement

• visual information

• conversations

• smells

• physical sensations

Normally the brain filters most of this information automatically.

But when the system becomes overwhelmed, that filtering becomes much harder.

It can feel as if the brain’s volume control has been turned up too high.

Every stimulus demands attention at once.

In busy work environments, this can happen very quickly.

ADHD, Executive Function, and Workplace Overload

For people with ADHD, there is often another factor involved: executive functioning.

Executive functions are the mental processes that allow us to:

• organise tasks

• prioritise work

• manage time

• regulate emotions

• switch attention

• hold information in working memory

These functions rely heavily on the prefrontal cortex, the part of the brain responsible for planning and self-regulation.

When executive functions are under strain, even simple tasks can feel mentally overwhelming.

For example:

You open your inbox and see 40 unread emails.
You try to prioritise them but keep jumping between tasks.
Someone interrupts you asking for an update.
You suddenly realise you forgot something important.

Your brain is now juggling multiple cognitive demands at once.

When this happens repeatedly, the nervous system may interpret the situation as overwhelming or threatening.

This activates the body's stress response.

The Nervous System Stress Response

The nervous system has one main job:

to detect safety or threat.

When the brain senses safety, we stay in a regulated state where we can:

• think clearly

• communicate

• regulate emotions

• focus on tasks

But when the brain senses too much pressure or stimulation, it activates the stress response system.

This system evolved to protect humans from danger.

It prepares the body for fight, flight, or freeze.

At work, this response can be triggered not by physical danger but by cognitive and sensory overload.

Fight: Irritability and Emotional Reactions at Work

In a fight response, the nervous system becomes highly activated.

This might look like:

• sudden irritation in meetings

• snapping at colleagues

• strong reactions to feedback

• feeling easily frustrated

Often people feel confused by these reactions afterwards.

But from a nervous system perspective, the brain was trying to defend itself against overload.

Flight: Avoiding Overwhelming Situations

Some people experience a flight response instead.

This might look like:

• avoiding meetings

• procrastinating on tasks

• leaving social situations early

• withdrawing from conversations

To others this may appear like disengagement.

But internally the nervous system is trying to escape stimulation.

Freeze: Mental Shutdown

In some situations the nervous system enters freeze.

This may include:

• mind going blank during meetings

• struggling to speak or respond

• intense mental fatigue

• feeling disconnected or foggy

Many people describe this as their brain simply stopping.

This is a protective response when the nervous system becomes overwhelmed.

Rejection Sensitive Dysphoria and Workplace Stress

For some people with ADHD, another factor can intensify these reactions: Rejection Sensitive Dysphoria (RSD).

RSD refers to an intense emotional response to perceived criticism or rejection.

At work this might be triggered by:

• performance feedback

• a short email response

• a colleague’s tone of voice

• feeling excluded from a conversation

Even when the situation is relatively neutral, the nervous system may interpret it as a threat to belonging or safety.

This can trigger a rapid emotional response that feels difficult to control.

Understanding this through a nervous system lens can reduce a great deal of self-blame.

Why Many Adults Discover ADHD Through Work Stress

Workplaces often expose patterns that were manageable earlier in life.

The structure of school or university may have masked difficulties.

But professional environments require constant:

• organisation

• prioritisation

• communication

• task switching

For many adults, this is when they begin noticing patterns such as:

• chronic overwhelm

• difficulty managing workload

• emotional exhaustion

• feeling capable but constantly behind

This is often when people start asking:

"Could ADHD explain what I'm experiencing?"

Strategies to Support Nervous System Regulation at Work

Understanding the nervous system is important, but it is also helpful to have practical strategies.

Several approaches from Acceptance and Commitment Therapy (ACT) and trauma-informed regulation can help.

1. Name What Is Happening

When the nervous system becomes overwhelmed, the first step is often recognition.

Instead of thinking:

"I can't cope."

Try noticing:

"My nervous system is overloaded right now."

Labelling the experience reduces emotional intensity and helps the brain regain perspective.

2. Ground Attention in the Present Moment

ACT often uses grounding exercises to bring attention back to the present.

A simple technique is the 5-4-3-2-1 exercise:

Notice:

• 5 things you can see

• 4 things you can feel

• 3 things you can hear

• 2 things you can smell

• 1 thing you can taste

This helps the nervous system move out of overwhelm and back toward regulation.

3. Reduce Sensory Input

If possible, temporarily reduce stimulation.

Examples include:

• stepping outside for fresh air

• lowering screen brightness

• using noise-cancelling headphones

• taking a short break from conversation

Even small changes can help the nervous system settle.

4. Regulate Through the Body

The nervous system often calms through the body before the mind.

Helpful approaches include:

• slow breathing

• stretching or movement

• walking outside

• holding something textured or grounding

These signals communicate safety to the brain.

5. Practice Self-Compassion

One of the most powerful shifts is replacing self-criticism with understanding.

Instead of:

"Why am I like this?"

Try:

"My nervous system is under pressure right now."

Self-compassion helps the brain move out of threat mode.

Understanding the Brain Changes Everything

When workplace experiences are viewed through a nervous system lens, many struggles begin to make sense.

Emotional reactions, overwhelm, shutdown, and fatigue are not signs of weakness.

They are signals from a nervous system that has been asked to process too much information and pressure at once.

Understanding these patterns can be the first step toward finding better ways of working with your brain rather than constantly fighting against it.

When It May Be Helpful to Explore ADHD Assessment

For some adults, these patterns are persistent enough to raise deeper questions.

If you regularly experience:

• chronic overwhelm at work

• difficulty starting or organising tasks

• intense reactions to feedback

• mental shutdown in busy environments

• feeling capable but constantly struggling to keep up

it may be worth exploring whether ADHD could be part of the picture.

A comprehensive ADHD assessment can provide clarity about how your brain functions and what strategies might support you moving forward.