UK Disability Rights · 2026
What rights do I have for invisible disabilities at work in the UK?
Legal basis
Equality Act 2010 — section on legislation.gov.uk">Equality Act 2010 s.6 (disability definition — visibility not relevant); Schedule 1 (further definition); EHRC Employment Statutory Code (extensive guidance on invisible/fluctuating conditions); case law including SCA Packaging v Boyle and J v DLA Piper (recurring conditions).
Your rights
Same as for visible disabilities: protection from discrimination, harassment, victimisation; right to reasonable adjustments; uncapped damages; no service requirement. Particular legal points for invisible disabilities: (1) recurring conditions (EqA Sch.1) — even if effects come and go, you may still meet the long-term test if condition is likely to recur; (2) fluctuating conditions (e.g., MS, mental health, IBS) — assessed at worst point not average; (3) effect of medication/treatment — assessed AS IF you weren't taking it (so 'I'm fine when I take my meds' isn't a bar to disability status).
Employer obligations
Same as visible disabilities — but particular care needed because: cannot 'see' the disability; might not realise without disclosure; might dismiss symptoms as poor performance; might fail to identify obvious adjustments. Once aware (disclosed or 'reasonably should have known' from absences/performance/Occupational Health), full s.20 duty kicks in.
Practical actions
1) Decide on disclosure strategy (see how-to-disclose-disability guide). 2) When disclosing, lead with impacts and adjustments needed, not just diagnosis. 3) Provide medical evidence (GP letter, OH report, specialist letter). 4) Document fluctuations — keep a journal of good days/bad days, triggers, impacts. 5) Identify specific adjustments for both 'good' and 'bad' phases. 6) Apply for Access to Work (covers many invisible disability needs). 7) If symptoms affect performance, raise BEFORE performance review goes negative — gets the conversation onto disability, not capability. 8) Use formal language — 'I have a long-term health condition meeting the EqA s.6 disability definition'.
If your employer refuses
Same as visible disability: s.20 (reasonable adjustments), s.15 (discrimination arising from disability — particularly relevant for fluctuating conditions where 'arising' includes absences/performance dips), s.13 (direct), s.26 (harassment if 'banter' about your condition). Tribunal claim within 3 months less 1 day.
Worked example
Mark has long COVID (fatigue, brain fog, post-exertional malaise — meets EqA s.6 for substantial and long-term adverse effect). Initially undisclosed, his performance dipped; he was placed on a Performance Improvement Plan. He disclosed long COVID to HR with GP and OH evidence. HR paused the PIP, granted adjustments (reduced hours, work from home, no deadlines on bad days, weekly check-ins on workload). His performance recovered. Without the disclosure, the PIP would likely have led to dismissal — once disclosed, the dismissal route became s.15 discrimination territory.
Recruiter pro tip
For fluctuating invisible conditions, document EVERYTHING in writing. Symptom diary, conversations about adjustments, employer communications, your performance evidence. UK tribunals weight contemporaneous notes heavily. Take 5 minutes daily to log: how you felt today, what was harder than usual, what helped. This becomes evidence if your employer later challenges your disability status, your need for adjustments, or your performance. The diary is your insurance policy against 'we didn't know' or 'you seemed fine'.
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