If you are searching for a clear answer to what neurodiversity means in a workplace context, this guide sets out the definition, the evidence, and what it means for how your organisation operates day to day.
What Does Neurodiversity Mean?
Neurodiversity refers to the natural variation in how human brains process information, learn, and experience the world. The term was coined by sociologist Judy Singer in the late 1990s. It is not a diagnosis or a medical category. It is a way of framing brain differences as part of normal human variation, rather than as deficits to be corrected.
Neurodivergent describes an individual whose brain works differently to what is considered typical. This commonly includes autism, ADHD, dyslexia, dyspraxia (also known as developmental coordination disorder, or DCD), dyscalculia, and Tourette's syndrome, though understanding of which conditions fall under this umbrella continues to evolve.
How Many Employees Are Neurodivergent?
Estimates vary depending on methodology and which conditions are included, but most UK sources place the figure at roughly 15 to 20% of the population. NHS Employers cites approximately one in seven people (over 15%). CIPD's guidance references a similar range, up to 20% of people identifying as neurodivergent in some way.
Whatever the precise figure for any individual organisation, this is not a small or niche group. It means that in a typical workforce of any meaningful size, neurodivergent colleagues are already present, whether or not this has been disclosed or formally diagnosed.
For organisations looking to understand need at scale, the Do-IT Profiler provides a fast, accessible digital screening tool that generates an individual cognitive profile without requiring a formal assessment or referral process. It is a practical starting point for identifying how widespread neurodivergent traits are across a workforce.
Is Neurodivergence a Disability Under UK Law?
This is a frequent point of confusion, and the honest answer is: sometimes, legally, yes, but not always how the individual themselves identifies.
Under the Equality Act 2010, a person is considered disabled if they have a physical or mental impairment that has a substantial and long-term adverse effect on their ability to carry out normal day-to-day activities. Many neurodivergent conditions meet this definition. Where they do, the employee is protected against discrimination and entitled to reasonable adjustments under the Act.
However, as Acas notes, many neurodivergent people do not see themselves as disabled, even where they may meet the legal definition. Employers should be guided by what an individual needs and how they describe themselves, rather than assuming.
What Does This Mean for Employers in Practice?
A few principles consistently appear across UK guidance on this topic.
Support should not depend on a formal diagnosis
Acas guidance is explicit that organisations should make clear to staff that they do not need a diagnosis to receive support. Many neurodivergent adults go undiagnosed, sometimes for years, and waiting for a formal assessment before acting can leave people unsupported in the meantime.
Where a formal assessment is appropriate, Lexxic's Workplace Needs Assessments are psychologist-led and designed to produce specific, practical recommendations for reasonable adjustments tied to an individual's role, not generic guidance that is hard to act on.
Reasonable adjustments are often low cost
Common adjustments include flexible working, written instructions alongside verbal ones, quiet working spaces or noise-cancelling headphones, structured meeting agendas shared in advance, and clear, predictable routines. None of these require significant investment, though some, such as assistive technology, may carry a cost depending on the individual's needs.
Line managers are central to whether support actually happens
Multiple sources point to line managers as the first point of contact for most neurodivergent employees, and therefore the people best placed to either enable or inadvertently block appropriate support. Acas guidance recommends that managers receive specific training on handling reasonable adjustments and discrimination, rather than relying on general awareness alone.
Lexxic's Neurodiversity for Line Managers programme is designed specifically for this. It goes beyond awareness to give managers a practical framework for having the conversations that actually lead to change, and is available as a closed, organisation-specific programme or as an open course.
One-off awareness sessions are a starting point, not an endpoint
CIPD research found that while 70% of organisations rate EDI as a critical priority, only 60% say neuroinclusion is a focus, and just 33% say it features in their formal EDI strategy. This gap between general commitment and specific action is common, and tends to close only when awareness is followed by concrete training, policy, and process changes.
For organisations ready to move beyond training into a structured, independently assessed approach to neuroinclusion, ND Smart accreditation provides an evidence-based framework across the full employee journey. Our HR Masterclass is also a practical next step for HR teams building internal capability.
A Note on Language
Language in this area continues to evolve, and preferences vary between individuals. Acas recommends using identity-first language where possible (for example, 'is autistic' rather than 'has autism'), reflecting that many neurodivergent people see this as part of who they are, not something separate that they carry. Where in doubt, asking an individual how they would prefer to be described is generally the most reliable approach.
Where This Leaves Employers
Understanding what neurodiversity means is the first step. The harder, more valuable work is building the specific capability, training, and processes that allow that understanding to translate into genuine support, before a problem surfaces rather than after.
If you are not sure where to start, our team will help you work out the right approach for your organisation, your sector, and your scale.
About Lexxic
Lexxic is a psychologist-led neurodiversity consultancy, supporting organisations across the public and private sector to build neuroinclusive workplaces. Powered by Do-IT Profiler, a data intelligence platform used by individuals across employment, education, justice, and healthcare settings.
Sources
- Walker, N. (2014). Neurodiversity: Some Basic Terms and Definitions. Referenced widely, including by Castro Valley Forum and other secondary sources, 2025.
- Acas (2025). Understanding Neurodiversity - Neurodiversity at Work.
- NHS Employers (2026). Embracing Neurodiversity in the Workplace.
- CIPD (2024). Neuroinclusion at Work.
- Equality Act 2010, Section 6. Cited in NHS Employers (2026) and Inclusive Employers (2025) guidance.
- Acas (2025). Making Your Organisation Neuroinclusive - Neurodiversity at Work.
- People Management (2024). Line managers: the missing piece of the neurodiversity puzzle? Papafilippou, V., Downes, L., Nicolopoulou, K. and Fahmy, A., 22 October 2024.
We have made reasonable efforts to verify the figures and sources cited above at the time of writing. This article does not constitute legal advice. Organisations should seek independent legal counsel on specific situations.