What the Equality Act Actually Requires
An employee tells their manager they were diagnosed with ADHD at thirty-four, ten years into a job they are good at. What happens in the next conversation says more about whether that employer understands the Equality Act 2010 than anything written in the staff handbook. Under section 6 of the Act, a person is 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. "Substantial" means more than minor or trivial — it does not mean severe. "Long-term" means it has lasted, or is likely to last, twelve months or more. Autism, ADHD, dyslexia, dyspraxia and Tourette's syndrome routinely meet that bar, and once they do, the same legal protections apply as they would for a physical disability.
Sections 20 and 21 place a duty on employers to make reasonable adjustments where a disabled worker is placed at a substantial disadvantage compared with someone who is not disabled. That duty has three limbs — adjusting a provision, criterion or practice, altering a physical feature of the workplace, or providing an auxiliary aid — and it applies whether the disadvantage shows up in recruitment, day-to-day duties, performance management or promotion. Crucially, the duty is anticipatory in recruitment and ongoing throughout employment, not a one-off box to tick after a diagnosis lands on a manager's desk. What counts as "reasonable" is a balancing test, not a fixed threshold — a tribunal will weigh the cost and practicality of the adjustment against the size of the employer and the extent to which it actually removes the disadvantage. A small agency with eight staff and a large corporate with eight thousand are not held to the same standard on cost, but both are held to the same standard on whether they seriously considered the request at all. Ignoring the request altogether is where employers of every size lose, regardless of budget.
The knowledge test that trips employers up
A tribunal will ask whether the employer knew, or could reasonably have been expected to know, that the employee was disabled. This is where most disputes actually happen — not over whether ADHD or autism counts as a disability, but over what the employer should have picked up on before the formal disclosure. Persistent lateness flagged in three separate reviews, a pattern of missed deadlines that doesn't match the quality of the work itself, sensory complaints about an open-plan floor — HR teams that treat these as isolated performance issues, rather than joining the dots, hand a tribunal an easy finding against them later.
What Reasonable Adjustments Look Like Once You Get Past the Policy Document
Generic wellbeing policies rarely map onto what an individual actually needs, and that mismatch is where most well-intentioned employers still get it wrong. Adjustments that come up repeatedly in practice include flexible start times for someone whose medication takes an hour to reach full effect, written instructions to sit alongside verbal briefings for someone who processes text better than speech, a desk away from the printer and the coffee machine for noise sensitivity, and extended or restructured deadlines on tasks that involve heavy task-switching. None of these require an occupational health consultant with a three-week waiting list to identify — a fifteen-minute conversation, done properly, gets most of the way there.
- Noise-cancelling headphones (Bose QuietComfort and Sony WH-1000X models are common workplace choices, typically £150–£300) for open-plan offices
- Coloured overlays or screen tinting software for visual stress associated with dyslexia
- Assistive software such as Read&Write or Otter.ai for transcription and proofreading support
- A single point of contact for instructions, rather than multiple managers giving conflicting briefs, which on its own resolves a surprising share of ADHD-related friction
- Permission to work from a quiet room during specific tasks, not as a blanket remote-work arrangement
Some of these cost nothing beyond a manager's willingness to change a habit. Others cost real money, and that's where Access to Work becomes relevant.
Access to Work: The Grant Scheme Most Line Managers Have Never Heard Of
Access to Work is a DWP grant scheme, administered through Jobcentre Plus and applied for via gov.uk, that funds support an employer would otherwise have to pay for out of its own budget. It can cover specialist equipment, a support worker or job coach, travel costs where public transport isn't accessible, and — increasingly relevant for neurodivergent applicants — mental health support sessions. The employee applies directly; the employer isn't the applicant, though HR often ends up helping fill in the forms because the process asks detailed questions about the specific job and the specific barriers it creates.
Here's the part employers consistently miss: turning down an adjustment on cost grounds without first checking whether Access to Work would fund it is close to indefensible in front of a tribunal. If a job coach or specialist software would remove the barrier and the DWP is willing to pay for most or all of it, "reasonable" stops being a meaningful objection. Any HR team that hasn't built an Access to Work referral into its standard disability process is leaving both money and legal protection on the table.
The Disclosure Problem Nobody Solves Cleanly
An employee has no legal obligation to disclose a diagnosis to their employer.
That sounds straightforward until you notice the tension it creates with the knowledge test above — an employer can't be found to have failed a duty it genuinely didn't know existed, which means non-disclosure can end up working against the very employee the law is meant to protect. Many neurodivergent staff mask at work precisely because previous disclosures went badly: a manager who treated ADHD as a productivity excuse, or a team that started talking differently once autism was mentioned in a one-to-one. The legal framework assumes rational disclosure decisions in an environment that, in practice, still punishes people for making them.
Employers who want this to go well should stop waiting for a formal diagnosis letter before acting. If an employee mentions, even informally, that they're "not great with instructions unless they're written down" or that "open-plan floors are a nightmare some days," that's enough to trigger an obligation to explore adjustments — waiting for a doctor's note first is a choice, not a legal requirement, and it's usually the wrong one.
When Employers Get It Wrong
Failure to make reasonable adjustments is one of several routes into an Employment Tribunal claim, alongside indirect discrimination and disability-related harassment, and it sits apart from unfair dismissal in one important respect: there's no minimum length of service required to bring it, and compensation for discrimination claims is uncapped. A claimant must go through ACAS early conciliation before lodging a claim, and the time limit is three months less one day from the date of the discriminatory act or the last in a continuing pattern of acts — a deadline that catches out employees and employers alike, because it runs from the act itself, not from when a grievance process eventually concludes. Legal costs aside, these claims are slow and reputationally awkward in ways that a rejected adjustment request never needed to become. Most employers who end up in front of a tribunal on this point didn't set out to discriminate; they simply never wrote down why a request was refused, which leaves a tribunal reconstructing the employer's reasoning from HR emails written months after the fact. That reconstruction rarely favours the employer. ACAS's own guidance on this is blunt: get the conversation and the paperwork right at the point of the request, not after a claim has already landed.
Tribunals have consistently found against employers who dismissed an adjustment request without any assessment at all — no conversation with occupational health, no Access to Work referral, no attempt to trial a change before rejecting it. The pattern that loses cases isn't refusing every request outright; it's refusing to engage with the process seriously enough to show the refusal was actually reasoned.
A Practical Starting Point for Managers
Build a workplace needs assessment into onboarding and into return-to-work conversations after any period of leave, rather than treating it as a reactive step triggered only by a complaint. Have the conversation with the individual, not with a generic policy document sitting on the intranet — two employees with the same diagnosis can need completely different adjustments, and copying a template from one to the other is how good intentions turn into a tribunal exhibit.
Review adjustments periodically rather than setting them once and forgetting them; needs shift as roles change, and an arrangement that worked in a junior position can fall apart the moment someone starts managing people themselves. Document what was requested, what was agreed, and why anything was declined — not as a defensive exercise, but because vague records are exactly what turns a manageable disagreement into a formal grievance six months later.