You don’t need a diagnosis to be legally disabled, but self-report alone rarely proves it.

The situation

A project manager brought discrimination claims against his former employer after being suspended and later dismissed. He said depression, anxiety, osteoarthritis, asthma, COPD and autism all disabled him under the Equality Act 2010The main piece of legislation protecting employees from discrimination at work. It covers nine protected characteristics including age, disability, sex, race, and religion, and makes it unlawful for a.... His employer accepted the depression, anxiety and physical conditions as disabilities. It did not accept that he was disabled by reason of autism. He had never been formally diagnosed. Since his late thirties he had believed he was autistic, based on his own reading and what his wife and friends told him. He never felt the need to get that confirmed.

What the tribunal found

The tribunal held he was not disabled by reason of autism under section 6 of the Equality Act 2010. A medical diagnosis is not a legal requirement for proving disability. What matters is the effect of the impairment, not a diagnosed cause. But an effect still has to be "substantial", meaning more than minor or trivial, and it is the claimant who has to prove it. The tribunal accepted that before he was suspended, he had some real difficulties with social interaction, understanding instructions and coping with change, but found these were not substantial. He had managed a long military career and described himself as an excellent communicator on his job application. He never asked for adjustments because he did not feel he needed any. After the suspension, his difficulties worsened sharply, but the tribunal found this was linked to his depression and anxiety, which his employer had already accepted as a disability, not to autism. There was no medical evidence connecting the deterioration to autism specifically, only his own, non-expert view.

Because his employer had already accepted he was disabled for other reasons, this finding did not end his case. His discrimination claims continue to a separate hearing on those grounds. An earlier version of the judgment wrongly stated his discrimination claims had been dismissed; the tribunal corrected this and confirmed the claims are ongoing. He also asked the tribunal to reconsider its finding on autism, on the basis he was now pursuing a formal diagnosis, but the tribunal refused. Reconsideration is not a chance to get a second run at the same point using evidence that could have been gathered before the original hearing.

A formal diagnosis is not a precondition for asking a tribunal to treat you as disabled, even for conditions like autism or ADHD. The law is deliberately built so you do not need an expensive medical diagnosis to be protected. Evidence is what counts here: proof the condition substantially affects your everyday life or your ability to work, more than minor, not simply your own belief that it does.

That is where self-report struggles on its own. A tribunal will weigh your account against everything else in the evidence, including how you managed for years without asking for help, what you said about yourself in job applications, and whether you ever raised it before a dispute began. Where you can, get an assessment or a diagnosis, and gather medical evidence, before you need it for a claim rather than after. Start that process before any dispute begins, not once one is already underway. Waiting, as happened here, can leave you without the evidence you need when your case is decided.

If you are dealing with more than one health condition, keep sight of the bigger picture. Losing the argument on one alleged disability rarely closes off your whole claim. Your discrimination claims can continue on a different disability your employer has already accepted, or a tribunal has already found. Get advice early. Find out which of your conditions already meet the legal test on the evidence you have, and where you still need stronger evidence.