Reasonable adjustments before diagnosis confirmed

Short answer

Yes. Adjustments can and often should be provided while a diagnosis of autism, ADHD or another condition is still pending. A formal diagnosis is helpful evidence, but it is not a legal precondition for support in either education or employment in England and Wales. What matters legally is whether the person meets the definition of disability under the Equality Act 2010 and is put at a substantial disadvantage that reasonable adjustments could remove or reduce.

The legal position under the Equality Act 2010

Under section 6 of the Equality Act 2010, 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, and long-term generally means it has lasted or is likely to last at least 12 months.

The important point is that this definition turns on the effect of the impairment, not on whether it has been formally labelled or diagnosed. Autism and ADHD are lifelong neurodevelopmental conditions, so the long-term requirement is usually straightforward to satisfy where the impairment is genuinely present. A pending diagnosis does not mean the impairment does not exist; it simply means the formal assessment process has not yet concluded.

For the duty to make reasonable adjustments (found in section 20 and, for education and services, in the relevant schedules), the trigger is that a provision, criterion or practice puts a disabled person at a substantial disadvantage compared with people who are not disabled. The duty is anticipatory in some contexts and reactive in others, but in neither case is a diagnostic certificate a legal requirement before support can be given.

Employment

An employer’s duty to make reasonable adjustments can arise once the employer knows, or could reasonably be expected to know, that a person is disabled and is likely to be placed at a substantial disadvantage. This is the concept of constructive knowledge. If an employee has told the employer about difficulties consistent with autism or ADHD, or has explained that they are undergoing assessment, the employer cannot simply wait for a formal diagnosis before considering adjustments. A tribunal can find that the employer ought reasonably to have known about the disability from the information available.

In practice this means an employer should engage now, discuss the difficulties the person is experiencing, and put in place practical measures rather than deferring everything to a future diagnosis. Acas guidance encourages employers to talk with the individual, avoid making assumptions, and focus on removing or reducing the specific disadvantage. Adjustments are assessed against whether they are reasonable, which takes into account effectiveness, practicality and cost.

Waiting for a diagnosis before acting carries legal risk for the employer, because if the person is in fact disabled and suffered a disadvantage that reasonable adjustments would have addressed, the delay itself can form part of a discrimination claim.

Post-16 and higher education

Universities, colleges and other post-16 providers are covered by Part 6 of the Equality Act 2010 and owe an anticipatory duty to make reasonable adjustments for disabled students. As with employment, the student must meet the definition of disability, but a formal diagnosis is not a legal precondition for that definition to be satisfied.

Most institutions will provide interim or temporary support while an assessment or diagnosis is pending. Disability or student support services can often put in place adjustments on the basis of a needs assessment, self-reported difficulties, evidence of ongoing assessment, or supporting letters from a GP or clinician confirming that assessment is under way. Common examples include extra time in assessments, alternative examination arrangements, coursework extensions, quiet spaces, note-taking support, and flexibility around attendance or deadlines.

A useful distinction is between what an institution is legally obliged to provide and what its own policies allow. Some funding-based support, such as Disabled Students’ Allowances, may require formal evidence of a disability, whereas an institution’s internal reasonable adjustments and support can usually be arranged more flexibly and more quickly. It is worth asking specifically for interim adjustments pending diagnosis, and asking what evidence the institution will accept in the meantime.

What evidence helps in the meantime

Because the question of whether someone is disabled ultimately turns on the effect of the impairment, contemporaneous evidence of that effect is valuable even before a diagnosis is confirmed. Helpful material includes:

1. A letter from a GP or clinician confirming that an assessment or referral is in progress and describing the current difficulties and their effect.

2. A record of the practical impact on day-to-day activities, for example concentration, organisation, communication, sensory sensitivities, sleep, or managing deadlines.

3. Any previous educational or occupational records, screening results, or needs assessments.

4. A clear written account of the specific tasks or situations where the person is disadvantaged, which helps identify targeted adjustments.

Practical next steps

1. Make the request in writing, explaining the difficulties being experienced and that a diagnosis is pending, and asking for interim or temporary adjustments.

2. Focus the request on the concrete disadvantage and the specific adjustments that would help, rather than on the label alone.

3. Provide whatever supporting evidence is available now, such as a GP letter confirming assessment is under way.

4. Ask the employer or institution to explain what evidence they require and to consider adjustments in the meantime rather than deferring until diagnosis.

5. Keep a record of the request, the response, and any delay, in case the matter later needs to be escalated through an internal grievance, complaint procedure, the Office of the Independent Adjudicator for higher education, or an employment tribunal.

Where the answer could change

The strength of the position depends on some missing facts. It matters whether the setting is employment, higher education, school or a service, because the precise adjustment duties and knowledge tests differ slightly. It matters what the organisation has been told, because knowledge or constructive knowledge is central in the employment context. It also matters whether the impairment genuinely meets the substantial and long-term test, since not every pending referral will result in a qualifying disability. Finally, some specific forms of funded support, as opposed to internal adjustments, may lawfully require confirmed diagnostic evidence, so it is sensible to distinguish between the two when making a request.