For Those Around You
Neurodivergence at Work: Why Every Fifth Employee Is Affected
15 to 20 percent of every workforce is neurodivergent, according to the common estimate (Doyle, 2020; CIPD, 2018). For a given workforce the figure holds only roughly, because sectors and roles differ. It seems high because most of this distribution stays invisible in organisations.
The numbers
Estimates vary by definition, country and age group. Roughly: autism affects 2 to 3 percent of the population. ADHD affects 5 to 8 percent. Dyslexia affects 5 to 10 percent. Dyscalculia affects 3 to 7 percent. Dyspraxia affects 2 to 5 percent. These forms frequently overlap. AuDHD (autism and ADHD co-occurring) is not an exception but one of the most common combinations.
The result: in a team of 20, about 3 to 4 would be neurodivergent. In a company of 500 employees, that would be 75 to 100.
Why the number seems high
Most neurodivergent employees do not know it. Or do not disclose it.
In adults, much remains undiagnosed. Autism in women is on average recognised later than in men, and many receive a diagnosis only in adulthood. Adult ADHD was considered overdiagnosed until recently, even though persistence into adulthood is now well documented.
On top of that comes masking: neurodivergent people learn early to simulate neurotypically conforming behaviour. This consumes cognitive resources and makes neurodivergence invisible in day-to-day work. More in the article on the invisible costs of masking.
What this means for the cost equation
The economic consequences fall into two separate cost categories:
Burnout costs arise while the person is still employed: sick days, reduced performance, rising error rates. Masking-related exhaustion often resolves more slowly than it builds up. What becomes visible to the organisation is therefore often not "the first signs" but a later stage.
Turnover costs arise after the departure: replacement costs between 50 percent (standard roles, SHRM) and 200 percent (specialised and leadership roles, Gallup) of annual salary. Plus knowledge loss, often months of onboarding, and possible further departures in the team.
So the group in which these costs can arise is not just 2 to 3 percent of the workforce, but by estimate 15 to 20 percent.
The following conversation is taken directly from the app, uncut and unedited.
User question
How can I as an employer recognise whether neurodivergent employees on my team need support without them having to disclose?
Autistic Mirror (Outer View/Employer)
This is a question about the work environment, not directly about autistic mechanisms. Yet the mechanism behind it is relevant to understanding why the question needs to be framed this way.
Why the disclosure problem exists at all
Autistic and neurodivergent employees often have years of experience with openness about their processing leading to disadvantages. Formal or informal. The brain learns: transparency is not safe. That is why masking is deployed. Masking means simulating neurotypically conforming behaviour to secure belonging and safety. This costs enormous cognitive resources. Resources that are then unavailable for the actual work.
The result: whoever designs their environment so that masking becomes unnecessary, relieves neurodivergent employees. Without anyone having to disclose anything.
What happens neurologically when environments are a poor fit
Neurodivergent brains respond to certain conditions with increased effort: unstructured meetings, unclear expectations, sensorially overwhelming spaces, short-notice schedule changes, implicit social rules. These conditions do not produce a bad attitude but increased cognitive load. Comparable to completing a task in an unfamiliar language while music plays in the background.
Visible signs that someone is under this load can include: withdrawal in meetings, noticeable productivity drops after certain situations, preferring written communication, difficulty with spontaneous requests, visible exhaustion after events that others find "relaxed".
These are not motivation problems. They are indicators of fit, not of performance.
What environments can do without requiring disclosure
Certain adjustments work as universal relief. They help neurodivergent employees disproportionately and harm no one: clear written summaries after meetings instead of verbal-only agreements. Agendas before meetings so the brain can prepare. One-on-ones as alternatives to group formats for feedback. Quiet work options alongside open ones. Explicit expectations instead of implicit rules. Flexible request channels.
When these structures exist, the threshold for naming needs drops. Because the system already signals that differences are acceptable.
The actual signal
An environment where neurodivergent employees do not have to fear disclosure does not come from an HR form. It comes from observable practice: How are unconventional work approaches received? Are deviations from norms treated as problems or as variations? Is strength valued over conformity?
Neurodivergent brains are very good at reading these signals. That is often part of what years of masking have produced.
This response is from Autistic Mirror. You can ask your own questions, about your situation.
For context: that neurodivergent people read such signals "very well" is a generalisation. It describes the experience of many, not a trait of all. That the adjustments mentioned "harm no one" is an expectation, not a measured finding.
Structural adjustments instead of individual measures
The most effective adjustments cost little and help the entire team. Noise-cancelling headphones as work equipment, written rather than verbal expectations, meetings with agendas sent in advance, optional camera use, buffers between appointments, quiet workspace options. These are not special treatment. They are structural adjustments that often benefit many on the team.
What does not help: more team events, more social interaction, more "appreciation initiatives". For neurodivergent employees in exhaustion phases, these measures can worsen the situation because they draw on additional masking capacity.
A bright spot
Organisations that understand neurological diversity as architecture rather than as a problem gain something hard to quantify. Many neurodivergent employees describe strengths such as deep work, pattern recognition, honest communication and loyalty, which come into play once the environment fits. This group is not a burden. They are an indication that work environments can be built for different brains. The adjustments that enable this are often the same ones that help the remaining 80 percent too.
Autistic Mirror explains autistic neurology individually, applied to your situation. Whether for yourself, as a parent, or as a professional.
For HR and D&I: autisticmirror.app/b2b
Sources
- Crompton, Ropar, Evans-Williams, Flynn & Fletcher-Watson (2020). Autistic peer-to-peer information transfer is highly effective. Autism, 24(7), 1704-1712. DOI: 10.1177/1362361320919286
- Doyle (2020). Neurodiversity at work: a biopsychosocial model and the impact on working adults. British Medical Bulletin, 135(1), 108-125. DOI: 10.1093/bmb/ldaa021
