Is Type 2 diabetes a disability?

Auriel WetherallLived with Type 2 diabetes for over 20 years · September 2026

This is one of the most common questions I get from managers and HR teams. The short answer is: often yes, but not always. Here's how to tell, and why the safest thing is to act as if it is.

What the law says

Under the Equality Act 2010, a person is disabled if they have a physical or mental condition that has a substantial and long-term effect on their ability to do normal day-to-day activities.

• Substantial means more than minor or trivial.
• Long-term means it has lasted, or is likely to last, at least 12 months. Type 2 almost always passes this part.

Some conditions, like cancer and multiple sclerosis, count as a disability automatically. Diabetes isn't one of them, so it depends on the person.

The part most people miss

When deciding whether someone is disabled, the law ignores the effect of their treatment. It asks what their condition would be like without the tablets or insulin.

So if an employee's diabetes is well controlled with medication, you can't say "they're fine, so they're not disabled". Take the medication away and ask what would happen. For many people on tablets or insulin, the answer is enough to count.

When it might not count

If someone's Type 2 is managed by diet alone, it's less clear. In one well-known appeal case, Metroline Travel v Stoute, a bus driver whose Type 2 was controlled by avoiding sugary drinks was found not to be disabled. Cutting out sugary drinks wasn't treated as "treatment" that should be ignored.

That doesn't mean diet-controlled diabetes never counts. Each case is decided on its own facts. It does mean you shouldn't assume either way.

What about prediabetes?

Prediabetes on its own is unlikely to count as a disability, because it usually has little effect on day-to-day life. That can change if it develops into Type 2, so keep the conversation open.

What this means for you as an employer

In practice, the question "is it a disability?" matters less than people think. The sensible approach is the same either way:

1. Talk to the employee about what they need.
2. Make reasonable adjustments. Most cost nothing. See Reasonable adjustments for diabetes for real examples.
3. Don't count diabetes-related absence in the same way as other sickness without thinking it through.
4. Write down what you agreed, so there's a paper trail if it's ever questioned.

And make sure line managers don't decide the disability question themselves. A throwaway comment like "you don't look disabled" is the sort of thing that ends up in a tribunal claim.

If you do all that and it turns out the person wasn't legally disabled, you've lost nothing. If you don't and they were, you could be facing a claim, and compensation for disability discrimination has no upper limit. More on that in Diabetes discrimination at work.

For the full picture of what the law expects, read Type 2 diabetes at work: the law in the UK.

Get the forms

My free 7-day plan walks you through the first week after someone tells you they have diabetes, with the forms you need, ready to print. If you want your whole organisation covered, the Diabetes at Work Kit has all 42 documents.

This is general information, not legal advice. For a specific case, speak to an employment lawyer or Acas.

Auriel isn't a doctor or a lawyer. This is general information from her own experience and UK guidance. Always follow your GP and diabetes team.