The ADA: What the Law Requires, and What It Doesn't
The Americans with Disabilities Act is widely referenced and frequently misdescribed — usually in one of two directions. Employers overestimate what it demands and treat it as a compliance threat. Job seekers overestimate what it guarantees and expect protections it does not provide.
For a separate commercial perspective on remote employee monitoring, see the practical guide; it should be evaluated independently against accessibility, privacy, and employment-law requirements.
Primary federal ADA information is available at ADA.gov.
Both misunderstandings cause avoidable problems.
General information, not legal advice. Take advice from an employment attorney in your state, and note that many states have broader laws than the ADA.
Who the employment provisions cover
Employers with 15 or more employees, for Title I, which governs employment.
That threshold matters. Many state laws apply to smaller employers, sometimes to those with a single employee, and many define disability more broadly. An employer outside the ADA is frequently inside a state law, and checking only the federal threshold is a common and expensive mistake.
Who is protected
A qualified individual with a disability: someone who, with or without reasonable accommodation, can perform the essential functions of the job.
Both halves matter. The law protects people who can do the job. It does not require hiring someone who cannot do it even with accommodation.
Disability is defined broadly — a physical or mental impairment substantially limiting a major life activity, a record of such an impairment, or being regarded as having one.
The ADA Amendments Act of 2008 deliberately widened this. Before it, courts had read the definition so narrowly that people with serious conditions were found not to be covered at all. The Amendments Act directed that the definition be construed in favour of broad coverage, and specified that mitigating measures — medication, hearing aids, prosthetics — are generally not considered when assessing whether an impairment is substantially limiting.
The practical effect: arguing that someone is not disabled enough to be covered is usually not a winning position. The analysis has moved to whether an accommodation is reasonable, which is where it belongs.
Episodic conditions and conditions in remission are covered if they would substantially limit a major life activity when active. This catches employers out regularly.
What employers must do
Not discriminate in hiring, firing, pay, promotion, training, or any other term of employment.
Provide reasonable accommodation to qualified applicants and employees, unless it would impose undue hardship.
Engage in the interactive process once on notice of a need. See the interactive process.
Keep medical information confidential, stored separately from personnel files.
Limit disability-related inquiries and medical examinations by stage — see below.
Not retaliate against someone who requests an accommodation, complains, or participates in an investigation.
What employers may and may not ask
Before a conditional offer: no disability-related inquiries and no medical examinations. Permitted: whether the applicant can perform the essential functions, with or without accommodation.
After a conditional offer: disability-related inquiries and medical examinations are permitted, provided they are required of all entering employees in that job category.
During employment: inquiries must be job-related and consistent with business necessity.
What the ADA does not require
This is where employer anxiety usually sits, and most of it is misplaced.
It does not require hiring someone unqualified. Affirmative action for people with disabilities is a federal contractor obligation under Section 503, not an ADA requirement, and even there it does not mean hiring someone who cannot do the job.
It does not require removing essential functions. Marginal tasks can be reassigned; essential ones cannot be eliminated.
It does not require providing the exact accommodation requested, only an effective one.
It does not require lowering performance or conduct standards, provided they are applied consistently and are job-related.
It does not require tolerating misconduct because it relates to a disability, where the conduct standard is job-related and consistently enforced. This area is genuinely nuanced and worth advice before acting.
It does not require creating a new position. Reassignment to an existing vacant position for which the person is qualified may be a reasonable accommodation; inventing a role is not required.
It does not require indefinite leave. A defined period of leave frequently is a reasonable accommodation.
It does not cover current illegal drug use.
What the ADA does not guarantee, for job seekers
It is not a hiring preference. An employer may hire a better-qualified candidate.
It does not protect against being fired for performance or conduct, if standards are applied consistently.
It does not require an employer to guess. With very limited exceptions, accommodation obligations begin when someone asks.
It does not cover every condition automatically. The definition is broad, and it is still a definition.
Other titles, briefly
Title I is employment. The ADA also covers state and local government services (Title II) and public accommodations (Title III) — which is why the accessibility of a company's public website and its physical premises can be at issue quite apart from anything to do with employment.
Section 508 applies to federal agencies' electronic and information technology, and is widely followed as a standard by the private sector. Its practical relevance to employers is that internal systems employees must use — HR portals, timekeeping, training platforms — are frequently inaccessible, which becomes an accommodation problem the moment you hire someone who cannot use them. See Section 508 and digital accessibility.
Enforcement
The EEOC enforces Title I. An individual generally must file a charge before bringing a lawsuit, and the deadlines are short — commonly 180 days, extended to 300 in states with their own enforcement agency.
If you think something has happened, get advice quickly rather than waiting until you are certain. People lose claims to the calendar more often than to the merits.
The framing that actually helps
For employers, the useful way to hold this is not "what is the minimum required." It is that the law describes a process — notice, conversation, effective solution, documentation — and employers who run that process well almost never end up in a dispute, whatever the eventual answer.
For job seekers, the useful thing to know is that the law constrains what you can be asked and requires a genuine conversation once you ask for something. It does not do the asking for you.