What Does ADA Mean?

What does ADA mean, exactly?

The ADA stands for the Americans with Disabilities Act, a U.S. civil rights law that was passed in 1990 and prohibits discrimination against people with disabilities. It guarantees that people with disabilities have the same rights and opportunities as everyone else, in the workplace, in public spaces, and increasingly, online.

Where the ADA Came From

The ADA was signed into law on July 26, 1990, after years of advocacy from the disability rights movement. It was modeled in part on the Civil Rights Act of 1964, extending similar anti-discrimination protections to people with disabilities. The law is enforced by federal agencies, including the U.S. Department of Justice, and has been amended over time, most notably through the ADA Amendments Act of 2008, which broadened the legal definition of “disability.”

The ADA is organized into five sections, or “Titles,” covering:

• Title I — Employment
• Title II — State and local government services
• Title III — Public accommodations (businesses open to the public)
• Title IV — Telecommunications
• Title V — Miscellaneous provisions

Who Does the ADA Apply To?

The ADA applies broadly to:

• Employers with 15 or more employees
• State and local governments
• Businesses open to the public, such as restaurants, retail stores, hotels, and medical offices
• Commercial facilities, including office buildings and factories

While the original text of the ADA doesn’t mention “websites” by name (the internet barely existed in 1990), courts and the DOJ have consistently applied Title III’s public accommodation requirements to business websites.

In practice, this means most companies with a website and a public-facing business also need to consider ADA website compliance by making sure their digital properties are accessible to people with disabilities.

How Does the ADA Define “Disability”?

Under the ADA, a person has a disability if they have a physical or mental impairment that substantially limits one or more “major life activities”. This includes things like walking, seeing, hearing, speaking, learning, or concentrating. The definition also covers people with a history of such an impairment, and people who are treated as if they have one, even if they don’t currently experience significant limitations.

This is a broad, legal definition rather than a fixed list of medical conditions. It’s meant to be interpreted generously, so it covers a wide range of visible and invisible disabilities, including chronic illnesses, mental health conditions, and episodic conditions like epilepsy or cancer that may not be active at all times.

Why ADA Compliance Matters for Your Business

Beyond the legal risk of lawsuits and complaints, ADA compliance is about making sure everyone, including people who use screen readers, keyboard navigation, or other assistive technology, can actually use your website or service. If you’re figuring out where your business stands, these resources can help you go deeper:

• Not sure where to start? Run through our ADA compliance checklist to see the key requirements at a glance.
• Want to check your own site? Learn how ADA website compliance testing works and what tools can help.
• Curious how this applies specifically to your company? See our full breakdown of ADA requirements and compliance for businesses.
• Looking for a complete walkthrough? Our guide to ADA compliance covers everything from standards to implementation.

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