When we think about disability, we often picture a wheelchair or a white cane. Yet the great majority of disabilities cannot be seen. At work, that changes everything: a colleague may live with a chronic illness, pain or a mental health condition without anyone knowing. This article explains what invisible disabilities cover, what they mean day to day, and how an organisation can act.
Contents
What is an invisible disability?
An invisible disability is one that is not noticeable at first glance. It can be a chronic illness, a mental health condition, a learning difference, partial hearing or sight loss, or lasting pain and fatigue.
According to Agefiph, the French fund for the employment of disabled people, around 80% of disabilities are invisible. Source: Agefiph. This figure challenges a persistent misconception: disability is not a separate category, it is a reality present in most teams. In the UK, nearly one in four working-age people are classed as disabled, and the rise is mostly linked to mental health conditions and other health problems. Source: GOV.UK, "The employment of disabled people 2025".
Legal definitions often cover these situations. Under the Equality Act 2010, a person is disabled if they have a physical or mental impairment with a substantial and long-term negative effect on their ability to do normal daily activities. Cancer, HIV infection and multiple sclerosis are covered from diagnosis. Source: GOV.UK, "Definition of disability under the Equality Act 2010".
What affected employees experience
An invisible disability has one particular feature: you have to choose whether to talk about it. Many employees hesitate, for fear of being judged, of seeing their skills questioned or of being treated differently. Some compensate alone, sometimes at the cost of great fatigue.
Daily life can also weigh heavily without anyone noticing. A remark about an absence, a "but you don't look ill" or repeated late meetings matter more than we think. These clumsy moments rarely come from bad intent. They come from a lack of information.
In the UK, nobody has to tell their employer that they are disabled. Sharing the information can, however, open the door to adjustments, and the employer must keep it confidential unless the employee agrees otherwise. Source: Acas, "Supporting disabled people at work". Employers also have a duty to make reasonable adjustments for disabled workers. Source: GOV.UK, "Reasonable adjustments for workers with disabilities or health conditions".
6 actions to take in your organisation
1. Inform, to challenge misconceptions
Start by explaining what an invisible disability is, with short content and concrete examples. A true-or-false quiz is a good starting point, because it makes people think without making them feel guilty.
2. Train managers in good habits
Managers need simple reference points: listen without asking for a diagnosis, offer to talk to the disability or HR lead, and adapt the organisation of work where possible. A few habits are often enough to reassure.
3. Make resources visible
Every employee should know who to turn to and how to ask for an adjustment, without having to search. A dedicated intranet page or a regular reminder makes the difference. In the UK, you can also point to Access to Work, a government grant that can fund support at work, including mental health support. Source: GOV.UK, "Access to Work".
4. Make the organisation of work more flexible
Many adjustments cost almost nothing: more flexible hours, occasional remote work, breaks, a quieter workspace, written instructions rather than spoken ones. Acas lists examples such as more frequent, shorter breaks, quieter spaces and regular check-ins. Source: Acas, "Mental health adjustments". These small gestures often benefit the whole team.
5. Give a voice, without imposing it
A voluntary testimonial, internal or external, makes the subject real. It should never be requested insistently: everyone remains free to talk about their situation or not.
6. Mobilise the group around a key moment
A collective moment, such as European Disability Employment Week (SEEPH), lets you talk about the subject without singling anyone out. In 2026 it runs from 16 to 22 November. Source: Agefiph. Our article on European Disability Employment Week 2026 helps you prepare it.
Summary table: 6 actions, 6 effects
| Action | Expected effect |
|---|---|
| Inform | Misconceptions recede |
| Train managers | Requests are better received |
| Make resources visible | Employees know who to turn to |
| Make work more flexible | Daily life becomes simpler |
| Give a voice | The subject becomes concrete |
| Mobilise the group | The subject becomes everyone's business |
FAQ
What share of disabilities are invisible?
According to Agefiph, around 80% of disabilities are invisible.
Does an employee have to tell their employer about a disability?
No. In the UK, nobody has to tell their employer that they are disabled, and the employer has no right to insist on details. Telling the employer can nevertheless allow the employee to benefit from suitable adjustments. Occupational health and the disability or HR lead are the right contacts to talk to. Source: Acas, "Supporting disabled people at work". Rules differ from one country to another, so check them for each country where you operate.
How do you talk about invisible disabilities without being clumsy?
The simplest approach is to listen, not to ask for a diagnosis, and to offer concrete solutions. If in doubt, point the person to the organisation's disability or HR lead.
Where should you start?
With a simple action that reaches everyone, such as a quiz or a short piece of content, followed by clear communication on the resources available. Our article on disability awareness at work offers more ideas.
Take it further
Invisible disability is the theme of the H-Games 2026, "Disability beyond appearances". This inter-company competition, organised with the Fédération Française Handisport (the French disability sport federation) during the week, invites employees to earn points in the United Heroes app through physical activities, quizzes, content and engagement actions. For other formats, see our SEEPH workplace activities. To go further, read our article on disability in the workplace: myths and realities.
Product Marketing Manager at United Heroes