Just Been Diagnosed With ADHD — What Do I Tell My Employer?

Getting an ADHD diagnosis as an adult is often clarifying and disorienting at the same time. Clarifying because it explains things — years of things — in a way that finally makes sense. Disorienting because it raises a series of immediate practical questions that nobody gives you a roadmap for.

One of the most common is: what do I tell work?

There is no single right answer. The decision depends on your workplace, your relationship with your manager, your contract situation, and what you actually need. What this article does is give you the legal position, explain your real options, and help you work out what makes sense for you.

Key Facts

• You are never legally required to disclose an ADHD diagnosis to your employer — before, during, or after the hiring process
• Section 60 of the Equality Act 2010 generally prohibits employers from asking health questions before making a job offer
• ADHD can qualify as a disability under the Equality Act when it has a substantial and long-term adverse effect on your ability to carry out normal day-to-day activities — the legal definition of "disability" is much broader than the everyday one
• You do not need a formal diagnosis to request reasonable adjustments — you need to be able to describe the functional impact on your work
• Access to Work (GOV.UK) is a government grant that can fund workplace support, coaching and equipment for people with ADHD — but you need to have some level of disclosure to access it
• Employers are protected from liability for failing to make adjustments only if they did not know, and could not reasonably have known, that the employee was disabled

Your three real options

Option 1: Disclose fully

You tell your manager (and/or HR) that you have received an ADHD diagnosis and describe how it affects your work. This is the option that opens up the most formal support — reasonable adjustments as a legal entitlement, protection from dismissal for disability-related absences or performance issues, and Access to Work funding.

Full disclosure makes sense when you have a reasonably good relationship with your manager, when you need specific structural changes to do your job well, or when you are already experiencing difficulties that are affecting your performance and you want a legitimate pathway to support rather than a performance process.

Option 2: Disclose functionally (describe impact without naming diagnosis)

You tell your manager that you have some difficulties — with sustained attention, with task-switching, with processing verbal instructions quickly — and ask for adjustments based on that, without disclosing the ADHD diagnosis itself.

This can work. Employers are required to consider reasonable adjustments when they know an employee may have a disability, and describing functional impact is often enough to trigger that duty. The limitation is that without a formal diagnosis on record, Access to Work applications are harder, and legal protections are harder to invoke if things go wrong.

Functional disclosure is often a reasonable middle ground when you are in a new role, when you are unsure how the information will be received, or when you want to test the employer's response before committing to a fuller conversation.

Option 3: Do not disclose

You tell nobody at work, manage as you have been managing, and keep the diagnosis private.

This is a legitimate choice. Many people with ADHD diagnoses do not disclose at work and do not need to. The cost is that you cannot formally request adjustments under the Equality Act framework, cannot access Access to Work, and cannot invoke disability discrimination protections if something goes wrong.

Non-disclosure makes sense if your current working conditions are broadly manageable, if you are in a short-term contract, if you are actively job-searching and planning to move, or if there are genuine concerns about how the information would be received.

What disclosure actually unlocks

Reasonable adjustments

Once your employer knows — or could reasonably be expected to know — that you have a disability, they have a legal duty to make reasonable adjustments. For ADHD, these commonly include: written instructions for complex tasks, protected focus time without meetings, flexibility on start and finish times, use of noise-cancelling headphones, longer deadlines for non-urgent work, and regular structured check-ins instead of ad hoc communication.

See reasonable adjustments: a complete guide (UK) for the full picture.

Legal protection

An employer cannot lawfully dismiss you, demote you, or treat you unfavourably because of your disability. They also cannot dismiss you for absence or performance that is caused by your disability without first considering whether adjustments could address the underlying issue. These protections only apply if the employer knows, or should know, about the disability.

Access to Work

Access to Work is a GOV.UK grant scheme that funds workplace support for people with disabilities and health conditions. For ADHD, it can fund an ADHD coach, specialist software, assistive technology, and other support. The grant goes directly to you or your employer and does not have to be repaid. It is significantly underused — partly because GPs and employers do not routinely mention it.

To apply, you will need to describe how your ADHD affects your ability to work. Full disclosure to your employer is not strictly required, but you will need to have some conversation with them about the support being put in place.

How to have the conversation if you decide to

Who to tell first

Your manager is the obvious first step, but they are not always the right first step. If you have a good relationship with your manager, start there. If you have concerns about how they will respond, consider going to HR first — explaining that you have received a diagnosis and want to understand the company's process for requesting adjustments before speaking to your manager.

You are not obliged to tell your manager before HR. In some workplaces, HR is better positioned to manage the process and can advise your manager, which reduces the burden on you to educate someone who may have no experience of ADHD.

What to actually say

You do not need a script, but it helps to know what you want the conversation to achieve. A simple structure:

"I have recently been diagnosed with ADHD. It affects my work in specific ways — [describe the functional impact, e.g. 'I find it harder to sustain attention during long unstructured periods' or 'I process written instructions more reliably than verbal ones']. I would like to talk about whether there are adjustments that could help."

You do not need to give a detailed account of your symptoms, your history, or your medication. Functional impact and what would help — that is the core of the conversation.

What to ask for and how to record it

Go into the conversation with a specific list of what you think would help. Vague requests are harder to action and harder to follow up. After the conversation, send an email summarising what was discussed and what was agreed. This does not need to be formal — "Just to confirm what we discussed today — [list adjustments], with a review in six weeks" is enough. Having it in writing protects you if the adjustments are not implemented.

When not to disclose

There are situations where disclosure is not in your interest, even if the general case for it is strong:

• Hostile or dismissive workplace culture: if your sense is that the information will be used against you rather than acted on, that instinct is worth taking seriously. Disclosure does not guarantee protection.
• Fixed-term or short contract: the legal protections exist but are harder to invoke in short-term arrangements, and the investment in a disclosure conversation may not be worth it if you are leaving in three months.
• Active job search: if you are already planning to move, focusing on finding a better environment may be more useful than navigating disclosure in your current role.

Further reading

• Reasonable adjustments: a complete guide (UK) — what you are entitled to and how to request it
• Access to Work explained — the government grant, how to apply, and what it can fund
• How to disclose your neurodivergence at work — the wider disclosure guide, covering autism, dyslexia, and other conditions