When people ask “what are the 4 major disabilities,” they usually mean the main types of disabilities that affect daily life, work, and eligibility for disability benefits in Canada. These are physical disability, sensory disability, mental health condition, and intellectual / developmental disabilities, and each can support a long term disability claim if symptoms are severe enough to stop you from working.

Understanding Major Disabilities in Canada

In Canadian law and disability programs, there is no single “official” list of conditions. Instead, disabilities are grouped into broad types of disabilities that share similar challenges at work and in daily living.

For LTD insurance and workplace accommodation, the most important point is that almost any condition can qualify if the symptoms cause serious participation restrictions at work, not whether it fits a label on a form. For examples of diagnoses that insurers often accept, see our guide on what conditions qualify for long term disability.

Common qualifying conditions include mental health disorders, chronic pain, neurological disabilities such as multiple sclerosis, and acquired brain injury after an accident. Our article on what is the most approved disability in Canada looks at which diagnoses appear most often in successful claims. Checklist if you're trying to return to work.

The 4 Major Types of Disabilities Explained

1. Physical disability & mobility‑related conditions

A physical disability affects how your body moves, lifts, stands, sits, or performs other physical tasks. It can be present from birth, like cerebral palsy (often described as the most common motor disability in childhood), or acquired later in life through illness, spinal cord injury, surgery, or chronic pain.

Examples include:

• Arthritis, chronic back pain, and fibromyalgia

• Cerebral palsy and other developmental disabilities involving movement

• Brain injury that affects balance, strength, or coordination

• Mobility issues after fractures or joint replacements

These conditions are among the most common disabilities in Canada. ​

2. Sensory disability: hearing & vision

A sensory disability affects how you see, hear, or process sensory information. Two common examples are hearing impairment and vision impairment.

• Hearing impairment can range from partial hearing loss to deafness and may require hearing aids, captioning, or modified work duties.

• Vision impairment includes low vision and blindness and can require screen‑reader technology, larger print, or changes in lighting and safety at work.

Even if you can still do some daily tasks, these conditions can limit safe work in certain jobs and may support long term disability benefits if you cannot perform your essential duties.

3. Mental health condition & psychological disorders

A mental health condition can be just as disabling as a physical illness. LTD insurers regularly see claims based on mental health, including anxiety disorders, bipolar disorder, depression, post‑traumatic stress disorder (PTSD), and other psychological disorders.

These conditions can cause:

• Trouble concentrating, memory problems, or confusion

• Panic attacks or severe anxiety around people or in busy settings

• Sleep problems and fatigue

• Difficulty handling stress, deadlines, and normal work pressures

Mental health disorders are a major category of approved LTD claims when the symptoms are severe and well‑documented. ​

4. Intellectual & developmental disabilities

This group includes intellectual disability and developmental disabilities that affect learning, problem‑solving, and independence. It can also include conditions like autism spectrum disorder and attention deficit hyperactivity disorder (ADHD) when symptoms are severe enough to limit work.

Common features include:

• Slower learning or difficulty understanding complex instructions

• Challenges with planning, time management, and social interaction

• Need for extra support, coaching, or modified tasks at work

Even adults with learning disabilities or ADHD who have worked for years may become disabled if their symptoms worsen, or if a brain injury or acquired brain injury makes it harder to cope with job demands.

Four Major Disability Types and LTD Examples

How Disabilities Affect Long Term Disability Claims

For long term disability insurance, the label (for example “Depression” “multiple sclerosis” or “acquired brain injury”) matters less than how your symptoms affect your ability to work.

Insurers focus on:

• Whether your condition causes participation restrictions in your main job duties

• How your symptoms limit you physically (lifting, sitting, walking) or mentally (concentration, memory, mood)

• The strength of your medical evidence: reports, test results, and treatment notes that show your limitations over time

For help turning your diagnosis into a strong claim, see our step‑by‑step guide on how to prove long term disability in Canada.

Insurers also look at:

• Whether you are under active treatment and following reasonable medical advice

• Whether your condition meets your policy’s definition of disability (usually “own occupation” then “any occupation”)

• Whether accommodations or a rehabilitation program could return you to work safely

Objective medical evidence for disability claims is a very important element in establishing a strong claim.

Hypothetical story: Kyle’s Concussion or traumatic brain injury in Moncton

Kyle is a 38‑year‑old warehouse supervisor in Moncton who suffers a serious traumatic brain injury during a recreational hockey game. After being hit hard into the boards, he is diagnosed with a concussion, which is considered an acquired brain injury that affects his memory, processing speed, and balance.

At first, Kyle assumes he will heal quickly. But months later, he still struggles with:

• Headaches and dizziness when he moves quickly

• Difficulty multitasking, remembering instructions, and handling bright lights

• Anxiety and low mood when he thinks about returning to the noisy warehouse environment

His neurologist explains that a brain injury is considered a neurological disability, and that his symptoms amount to a mental health condition as well, because of his anxiety and depression. Together, they decide he cannot safely return to his pre‑injury job full‑time.

Kyle applies for long term disability benefits under his group policy. The insurer questions whether his symptoms are “severe enough” and hires its own doctor to review his file. When his claim is denied, Kyle contacts a disability law firm.

A disability lawyer:

• Reviews his policy and confirms that neurological disabilities and acquired brain injury can qualify for LTD when they limit work

• Helps Kyle gather detailed reports from his neurologist, psychologist, and occupational therapist

• Shows how his cognitive and balance problems cause serious participation restrictions in his job, despite his age and effort to recover

With legal help, Kyle’s claim is settled, giving him the income he needs while he focuses on rehabilitation, vocational planning, and a possible future in lighter work better suited to his new abilities.

Speak to a Disability Lawyer About Your Claim

If you live with one of these 4 major types of disabilities and cannot work, you do not have to fight your insurance company alone. A disability law firm can explain your rights, review your policy, and help you build the kind of strong LTD claim that insurers take seriously.

A lawyer can:

• Confirm whether your condition (for example mental health disorders, neurological disabilities, or developmental disabilities) meets your policy’s test for disability

• Help you gather and organize medical and employment evidence, especially for complex conditions like autism spectrum disorder, attention deficit hyperactivity disorder, or acquired brain injury

• Challenge a denial or early cut‑off and pursue a fair settlement or reinstatement of your disability benefits​

FAQ: Major disabilities and LTD in Canada

What are the 4 major disabilities for long term disability claims?

The four main types of disabilities often seen in LTD claims are physical disability, sensory disability (such as hearing impairment and vision impairment), mental health condition, and intellectual / developmental disabilities. Each can support a long term disability claim if it stops you from doing your essential job duties.

Is autism spectrum disorder considered a disability in Canada?

Yes. Autism spectrum disorder is generally treated as a developmental disability or intellectual disability, and can qualify for disability benefits if symptoms significantly limit learning, communication, or work activities.

Can mental health disorders like anxiety or bipolar disorder qualify for long term disability?

Yes. Mental health disorders including anxiety disorders, depression, and bipolar disorder are major causes of LTD claims when they prevent you from working safely and reliably, even if you can manage some daily tasks.

Do brain injuries and neurological disabilities qualify for LTD?

Yes. Neurological disabilities such as multiple sclerosis, epilepsy, and acquired brain injury (including traumatic brain injury) often qualify when they impair memory, balance, or other functions needed for work. The key is medical evidence showing how these symptoms create serious participation restrictions in your job.

What if my disability is “invisible,” like learning disabilities or ADHD?

“Invisible” disabilities such as learning disabilities or attention deficit hyperactivity disorder can still support LTD if medical evidence shows serious limits on concentration, organization, and job performance, despite treatment.