What Are 'Major Life Activities' Under the ADA?

To qualify for protection under the ADA, your condition must substantially limit one or more 'major life activities.' This phrase sounds technical, but it covers far more than most people realize. Understanding what counts as a major life activity helps you articulate your needs and advocate for accommodations.

Why This Matters

Major life activities are the building blocks of ADA protection. When you request an accommodation, you're essentially saying: 'I have a condition that substantially limits [major life activity], and I need [accommodation] to do my job.' The more clearly you can identify which activities your condition affects, the stronger your request.

Before 2008, courts interpreted this term narrowly, and many people with real disabilities were denied protection. The ADA Amendments Act changed that, instructing courts to interpret 'major life activities' broadly. Today, the list is extensive; and it's not exhaustive. If an activity is important to daily life, it likely qualifies.

Categories of Major Life Activities

The ADA and EEOC regulations provide examples of major life activities, organized into two main categories: general activities and major bodily functions.

General Activities

These are the activities that make up daily life:

• Physical movement: Walking, standing, sitting, reaching, lifting, bending
• Sensory functions: Seeing, hearing
• Communication: Speaking, reading, communicating
• Cognitive functions: Thinking, concentrating, learning
• Basic physical functions: Breathing, eating, sleeping
• Manual tasks: Performing manual tasks (using hands and fingers for basic activities)
• Self-care: Caring for oneself (bathing, dressing, feeding oneself)
• Social interaction: Interacting with others
• Working: Yes, working itself is a major life activity

Major Bodily Functions

The 2008 amendments explicitly added the operation of major bodily functions to the definition. This was critical because many conditions affect internal body systems without being visible to others. If your condition affects any of these functions, it likely qualifies:

• Immune system function: relevant for autoimmune conditions, HIV/AIDS, immunodeficiencies
• Normal cell growth: relevant for cancer
• Digestive function: relevant for Crohn's disease, ulcerative colitis, celiac disease, IBS
• Bowel and bladder function: relevant for many conditions including interstitial cystitis, incontinence
• Neurological function: relevant for epilepsy, MS, Parkinson's, neuropathy, brain injuries
• Brain function: relevant for mental health conditions, traumatic brain injury, neurological conditions
• Respiratory function: relevant for asthma, COPD, cystic fibrosis
• Circulatory and cardiovascular function: relevant for heart disease, blood disorders
• Endocrine function: relevant for diabetes, thyroid conditions, adrenal disorders
• Reproductive function: relevant for conditions affecting fertility, pregnancy-related conditions, endometriosis
• Hemic and lymphatic function: relevant for blood disorders, lymphoma
• Musculoskeletal function: relevant for arthritis, muscular dystrophy, back conditions

The List Is Not Exhaustive

The examples above come directly from the ADA and EEOC guidance, but they are explicitly described as examples, not a complete list. Other activities that may qualify include:

Driving

Writing

Operating machinery

Typing

Any activity that is of central importance to most people's daily lives

The test is whether the activity is of comparable significance to those explicitly listed; not whether it appears on any particular list.

What 'Substantially Limits' Means

Your condition doesn't need to prevent you from performing a major life activity; it just needs to make it substantially harder compared to most people. Consider these examples:

• Concentrating: If you have ADHD and find it significantly harder to focus on tasks than the average person, concentration is substantially limited; even if you can still concentrate with effort or medication.
• Sleeping: If you have a sleep disorder that prevents you from getting restorative sleep most nights, sleeping is substantially limited; even if you technically sleep some hours.
• Walking: If chronic pain means you can only walk short distances before needing to rest, walking is substantially limited; even if you can still walk.
• Immune function: If you have an autoimmune condition that causes your immune system to attack your own body, immune function is substantially limited; regardless of whether you 'look sick.'

Applying This to Your Situation

When thinking about which major life activities your condition affects, consider:

**What does your condition make harder?**Don't just think about what you can't do; think about what requires significantly more effort, time, or resources than it would for most people.

**Think without mitigating measures.**The law evaluates your condition as it would be without medication, therapy, assistive devices, or other treatments. If your condition would substantially limit you without these supports, it counts.

**Consider episodic conditions.**If your condition flares up periodically, it's evaluated based on how limiting it is when active; not just your best days.

**You only need one.**Your condition only needs to substantially limit one major life activity to qualify you for ADA protection. Many conditions affect multiple activities, but one is enough.

Examples: Conditions and Their Affected Activities

To illustrate how this works in practice:

Depressionmay substantially limit: thinking, concentrating, sleeping, interacting with others, caring for oneself, brain function

Diabetesmay substantially limit: eating, endocrine function, and (if complications develop) circulatory function, seeing, kidney function

Chronic fatigue syndromemay substantially limit: walking, standing, concentrating, sleeping, immune function

ADHDmay substantially limit: concentrating, thinking, learning, neurological function

Chronic back painmay substantially limit: walking, standing, sitting, bending, lifting, sleeping, musculoskeletal function

Anxiety disordersmay substantially limit: concentrating, thinking, sleeping, interacting with others, brain function

What This Means for You

When you request accommodations, you'll need to connect your condition to a limitation. You don't need to use the phrase 'major life activity' - but understanding this concept helps you explain your needs clearly.

Instead of just saying 'I have anxiety,' you might say: 'Due to my anxiety, I have difficulty concentrating in open office environments with a lot of noise and movement.' Instead of just saying 'I have Crohn's disease,' you might say: 'My condition affects my digestive system and I need quick access to a restroom.'

The language you use matters less than the substance. What matters is connecting your condition to how it affects your functioning; and then connecting that to what accommodation would help.

Next Steps

Continue building your understanding of the accommodation process:

What Is a Reasonable Accommodation?: Learn what accommodations you can request

How Do I Request Accommodations at Work?: Practical steps to start the process

What Kinds of Workplace Accommodations Are Available?: Examples of accommodations by type

Do I Have to Disclose My Disability to Get Accommodations?: Understanding disclosure requirements

• Disclaimer: This article provides general information about major life activities under the ADA and is not intended as legal advice. Whether a specific condition substantially limits a major life activity depends on individual circumstances. If you have questions about your specific situation or believe your rights have been violated, consult with a qualified employment attorney or contact the Equal Employment Opportunity Commission (EEOC).