Summary. The ADA asks employers to do something management training rarely covers: hold a structured conversation, document it, and make an individualized decision. This article covers who is protected after the 2008 amendments, what makes someone qualified, and how essential functions are determined — where most cases are won or lost. It walks the interactive process step by step, including what medical information may be requested and from whom, and surveys the accommodations that arise most often. Later sections address undue hardship and direct threat, pregnancy and religion, confidentiality, and the documentation that decides litigation.

A warehouse supervisor notices that one of his pickers has started sitting down between orders and moving more slowly. He mentions it in a performance conversation. The employee says, "I have some back issues, I'm dealing with it."

The supervisor documents the performance conversation and moves on. Three months later, after two more conversations and a written warning, the employee is terminated for productivity.

The company's position is straightforward and, on the facts as its managers understood them, entirely defensible: the employee never requested an accommodation, never used the word "disability," never submitted paperwork, and never went to HR.

None of that matters. "I have some back issues" is a request for accommodation. The ADA imposes no magic words requirement. The moment an employee links a limitation in performance to a medical condition, the employer is on notice, and the obligation to engage in the interactive process attaches — regardless of whether anyone recognized it at the time.

That is the central practical fact about accommodation law: the duty is triggered by information, not by a form.

The short answer

Who is covered. An employer with 15 or more employees, 42 U.S.C. § 12111(5). Many state laws cover smaller employers.

Who is protected. A qualified individual with a disability — someone who, with or without reasonable accommodation, can perform the essential functions of the position, § 12111(8).

Disability, § 12102, means:

  1. A physical or mental impairment that substantially limits one or more major life activities;
  2. A record of such an impairment; or
  3. Being regarded as having such an impairment.

The duty. Make reasonable accommodations to the known physical or mental limitations of a qualified individual, unless doing so would impose an undue hardship, § 12112(b)(5)(A).

The process. Once on notice, engage in an informal, interactive process with the employee to identify the limitation and potential accommodations, 29 C.F.R. § 1630.2(o)(3).

The three most common employer failures: not recognizing a request; applying a policy instead of making an individualized decision; and failing to document the process.

Who is protected: the ADAAA changed the fight

Before 2008, employers won most ADA cases at the coverage stage — the plaintiff was not disabled enough. The ADA Amendments Act of 2008 ended that. Congress directed that the definition be construed in favor of broad coverage and that the question whether an impairment substantially limits a major life activity "should not demand extensive analysis."

Specific rules that follow:

  • Mitigating measures are disregarded in determining whether an impairment substantially limits a major life activity — except ordinary eyeglasses and contact lenses. A person whose diabetes is well controlled by insulin, or whose depression is managed by medication, is still evaluated by reference to the unmitigated condition.
  • Episodic conditions and conditions in remission are disabilities if they would substantially limit a major life activity when active. This covers epilepsy, multiple sclerosis, cancer in remission, post-traumatic stress disorder, and many autoimmune conditions.
  • Major life activities include caring for oneself, performing manual tasks, seeing, hearing, eating, sleeping, walking, standing, lifting, bending, speaking, breathing, learning, reading, concentrating, thinking, communicating, and working — and expressly include major bodily functions: immune, digestive, bowel, bladder, neurological, brain, respiratory, circulatory, endocrine, and reproductive functions, and normal cell growth.
  • The regulations list conditions that will virtually always be disabilities, including deafness, blindness, intellectual disability, partially or completely missing limbs, mobility impairments requiring a wheelchair, autism, cancer, cerebral palsy, diabetes, epilepsy, HIV infection, multiple sclerosis, muscular dystrophy, major depressive disorder, bipolar disorder, PTSD, obsessive compulsive disorder, and schizophrenia.

"Regarded as." An individual is regarded as having a disability if subjected to a prohibited action because of an actual or perceived impairment, whether or not it limits a major life activity — with an exception for impairments that are transitory and minor (actual or expected duration of six months or less and minor). Critically, an employer owes no accommodation duty to someone covered only under the "regarded as" prong, § 12201(h). But it may not discriminate against them, which is why the prong matters in termination cases.

Not disabilities, by statute: current illegal drug use (though addiction in recovery may be), and a list of excluded conditions including transvestism, compulsive gambling, kleptomania, and pyromania. Alcoholism is an impairment, but an employer may hold an employee to the same performance and conduct standards as others and may prohibit alcohol use at work.

The practical consequence. Fighting coverage is usually a losing strategy and always an expensive one. The productive questions are whether the person is qualified and whether an accommodation is reasonable.

Essential functions: where cases are decided

A "qualified individual" must be able to perform the essential functions of the position, with or without accommodation. The employer need not eliminate an essential function; it must consider accommodations that permit its performance.

Determining essential functions, 29 C.F.R. § 1630.2(n). The regulation lists evidence to consider:

  • The employer's judgment;
  • Written job descriptions prepared before advertising or interviewing;
  • The amount of time spent performing the function;
  • The consequences of not requiring performance;
  • The terms of a collective bargaining agreement;
  • The work experience of past incumbents; and
  • The current work experience of incumbents in similar jobs.

Reasons a function may be essential: the position exists to perform it; there are a limited number of employees available to perform it; or it is highly specialized and the incumbent was hired for that expertise.

Job descriptions are evidence, not law. A description listing "lifts 50 pounds" for a role where lifting occurs twice a month and could be done by anyone will not carry the day. A description written after the accommodation request is worth very little. And a description that recites physical requirements rather than outcomes narrows the employer's own options — "moves inventory between stockroom and floor" leaves room for a cart; "lifts and carries 50 pounds" does not.

Attendance and regular presence. Most courts treat regular attendance as an essential function of most jobs, and some treat physical presence as essential where the work requires teamwork, supervision, or equipment. But the pandemic-era normalization of remote work has made blanket assertions harder to sustain, and an employer that ran the job remotely for eighteen months will struggle to argue that presence is essential.

Marginal functions may be reassigned as an accommodation. Essential ones may not.

The interactive process, step by step

The regulation describes it as "an informal, interactive process." Courts treat a failure to engage as evidence of discrimination, and in several circuits an employer that fails to engage cannot rely on the argument that no accommodation existed.

Step 1 — Recognize the request. No magic words. Any communication linking a medical condition to a workplace limitation triggers the duty. It may come from the employee, a family member, or a health care provider. A supervisor's note that "she said her medication makes her groggy in the mornings" is a request.

Step 2 — Acknowledge promptly and in writing. Delay is itself a form of denial in the case law. Send a short, neutral acknowledgment identifying who will handle the request.

Step 3 — Analyze the job. Identify the essential functions and the specific limitation. Do not analyze the diagnosis; analyze the functional limitation — what the person cannot do, and under what conditions.

Step 4 — Request medical information, if needed. The employer may request documentation where the disability and the need for accommodation are not obvious. Rules that matter:

  • Ask for the limitation and the needed accommodation, not the diagnosis and not the complete medical record.
  • Use a targeted form; a request for "all medical records" is unlawful and is treated as a disability-related inquiry beyond business necessity.
  • Route the information to a designated person, not the supervisor, and keep it in a separate confidential file, § 12112(d)(3)(B).
  • Include a GINA safe harbor warning against providing genetic information.
  • If the documentation is insufficient, explain what is missing and give the employee a chance to supplement before denying. Do not go straight to denial.
  • A second opinion at the employer's expense is permitted where the employer has a legitimate reason to doubt the sufficiency of the documentation.

Step 5 — Identify possible accommodations. Ask the employee first; they usually know. Consult the Job Accommodation Network, the person's health care provider (with authorization), vocational rehabilitation resources, and the employer's own operations staff. Generate more than one option.

Step 6 — Assess reasonableness and hardship. For each option, ask whether it enables performance of essential functions and what it costs in dollars, disruption, and impact on others.

Step 7 — Choose and implement. The employer may choose among effective accommodations and need not provide the employee's preferred one — but the chosen accommodation must actually be effective. A cheaper alternative that does not work is a denial.

Step 8 — Document. The request, the acknowledgment, the essential function analysis, the medical information requested and received, the options considered, the reason for the choice, the implementation date, and the follow-up.

Step 9 — Monitor. Accommodations that worked in March may not work in September. Schedule a check-in. The duty is ongoing, and a changed condition reopens the process.

The accommodations that come up most

Schedule modification. Adjusted start and end times, part-time schedules, flexible breaks, and modified shift assignments. Frequently the cheapest effective accommodation and frequently refused because of a rigid scheduling practice rather than an operational need.

Telework. Whether working from home is reasonable turns on whether physical presence is an essential function. An employer with an existing telework program will find it difficult to argue that the same job cannot be performed remotely for an employee with a disability. An employer without one may still need to consider it.

Leave. A finite period of leave, including leave beyond FMLA exhaustion, may be a reasonable accommodation. Indefinite leave generally is not. The EEOC's position is that inflexible maximum leave policies violate the Act when applied without individualized assessment, and it has brought systemic litigation on the theory. Circuits differ on how long is too long, but they agree the analysis must be individualized.

Equipment and workplace modification. Ergonomic seating, sit-stand desks, screen readers, magnification software, captioning, amplified telephones, lifting aids, accessible parking, and physical modifications to facilities.

Job restructuring. Reallocating marginal functions to other employees, changing when or how a function is performed, or adjusting supervisory methods (written instructions rather than verbal, for example).

Modified policies. Permitting a service animal, allowing food or drink at a workstation for a diabetic employee, permitting additional breaks, adjusting a dress or uniform policy, or waiving a rotation requirement.

Reassignment. The accommodation of last resort — reassignment to a vacant position for which the employee is qualified, when no accommodation permits performance of the current job. Two points recur:

  • The employer need not create a position, bump another employee, or promote the employee.
  • Most circuits, following US Airways, Inc. v. Barnett, 535 U.S. 391 (2002), and EEOC guidance, hold that reassignment means placement, not merely permission to compete — though a minority disagree, and Barnett itself held that an accommodation conflicting with a seniority system is ordinarily unreasonable absent special circumstances.

Supervisory and behavioral accommodations. An employer need not tolerate misconduct that would result in discipline for anyone else, even where the disability caused it — but it may need to accommodate prospectively, and it should consider whether an accommodation would prevent recurrence.

What is not required: eliminating an essential function; lowering production or quality standards; providing personal use items (wheelchairs, hearing aids, eyeglasses); creating a new position; providing a different supervisor; or excusing past misconduct that violated a uniformly applied conduct standard.

Undue hardship and direct threat

Undue hardship, § 12111(10), means significant difficulty or expense, judged against:

  • The nature and net cost of the accommodation, taking into account tax credits and outside funding;
  • The overall financial resources of the facility, the number of employees there, and the effect on expenses and resources;
  • The overall financial resources of the employer, its size, and the number, type, and location of facilities;
  • The type of operation, including composition and functions of the workforce; and
  • The impact on the operation of the facility.

Two points are consistently misunderstood. First, hardship is measured against the employer's resources, not the department's budget — a large company cannot claim hardship because a small cost center cannot absorb it. Second, coworker morale or resentment is not undue hardship; a genuine, demonstrated disruption to operations may be.

Most accommodations cost little or nothing. Employers asserting hardship should be prepared to show the actual analysis, because unsupported assertions of cost are routinely rejected.

Direct threat, § 12111(3), permits exclusion where an individual poses a significant risk of substantial harm to the health or safety of the individual or others that cannot be eliminated or reduced by reasonable accommodation. The determination must be:

  • Individualized, based on the person's present ability to perform safely;
  • Based on reasonable medical judgment relying on the most current medical knowledge and the best available objective evidence; and
  • An assessment of the duration of the risk, the nature and severity of the potential harm, the likelihood that harm will occur, and the imminence of the potential harm.

Chevron U.S.A. Inc. v. Echazabal, 536 U.S. 73 (2002), upheld the regulation extending direct threat to risks to the individual's own health — but the same individualized, evidence-based standard applies. Generalized fear, stereotype, or a physician's blanket restriction without individualized analysis will not support exclusion.

Pregnancy and religion: adjacent duties with different tests

The Pregnant Workers Fairness Act, 42 U.S.C. §§ 2000gg to 2000gg-6, requires reasonable accommodation of a qualified employee's known limitations related to pregnancy, childbirth, or related medical conditions, absent undue hardship. Two features distinguish it from the ADA:

  • There is no disability threshold. An ordinary, uncomplicated pregnancy limitation qualifies.
  • The employee may be qualified even if temporarily unable to perform an essential function, provided the inability is for a temporary period, the function could be performed in the near future, and the inability can be reasonably accommodated.

The implementing regulations identify common accommodations — additional breaks, seating, schedule changes, light duty, telework, leave, and modified uniforms — and treat several as presumptively reasonable with minimal documentation. Employers should also note the PUMP Act's separate break time and private space requirements for nursing employees, and Young v. United Parcel Service, Inc., 575 U.S. 206 (2015), which addressed accommodation parity under the Pregnancy Discrimination Act.

Religious accommodation under Title VII uses a different and, until recently, far weaker standard. Trans World Airlines, Inc. v. Hardison, 432 U.S. 63 (1977), had been read to permit denial on a showing of anything more than a de minimis cost. Groff v. DeJoy, 600 U.S. 447 (2023), rejected that reading: an employer must show that the burden of granting an accommodation would result in substantial increased costs in relation to the conduct of its particular business. That is a materially higher bar, and employers that denied religious scheduling and dress accommodations reflexively should revisit their practice.

Medical inquiries and confidentiality

The ADA restricts medical inquiries at three stages, § 12112(d):

  • Pre-offer. No disability-related inquiries or medical examinations at all. The employer may ask whether the applicant can perform the essential functions, with or without accommodation, and may describe the job and ask how the applicant would perform specific tasks.
  • Post-offer, pre-employment. Medical examinations and inquiries are permitted if required of all entering employees in the same job category, and the results are used consistently with the Act.
  • During employment. Inquiries and examinations must be job-related and consistent with business necessity — meaning the employer has a reasonable belief, based on objective evidence, that the employee's ability to perform essential functions is impaired or that the employee poses a direct threat.

Confidentiality. All medical information must be kept in separate files and treated as confidential, with narrow exceptions: supervisors and managers may be told about necessary restrictions and accommodations (not diagnoses); first aid and safety personnel may be told if the condition might require emergency treatment; and government officials investigating compliance may be given access.

Wellness programs and voluntary health screenings have their own rules under the ADA and GINA, and their permissible incentive levels have been litigated and revised.

A worked example

Marcus Weill is a claims analyst at a 400-employee insurer. He is diagnosed with a chronic sleep disorder that makes early mornings unreliable but does not affect his work otherwise.

Day 1. He emails his manager: "I've been diagnosed with a sleep condition and my doctor says a 9:30 start would help a lot. Is that possible?"

Day 2. The manager forwards to HR rather than deciding. HR sends an acknowledgment naming a coordinator and enclosing a targeted medical inquiry form asking for the functional limitation and the suggested accommodation — not the diagnosis, not the records.

Day 9. The provider's response confirms a condition affecting sleep-wake regulation and recommends a start time no earlier than 9:30, indefinitely.

Day 10. The coordinator analyzes essential functions with the department manager. The role requires handling a daily claims queue, attending a weekly team meeting at 9:00, and covering a phone line from 8:00 to 5:00 shared among six analysts.

Day 12. Options considered and documented:

  1. 9:30 start, 6:00 end. Covers the queue. Conflicts with the 9:00 team meeting and shifts phone coverage.
  2. Move the team meeting to 10:00. No operational obstacle; the manager simply preferred 9:00.
  3. Adjust phone rotation so Marcus takes the 4:00-6:00 block others dislike.
  4. Telework two days a week, which the department already permits others.

Day 14. The employer implements options 1, 2, and 3. Cost: zero. It documents the analysis, the choice, and a 60-day check-in.

Day 74. The check-in shows the arrangement is working. The file is closed with a note that the accommodation continues and will be revisited if the role changes.

What the file proves. Prompt acknowledgment. Targeted medical inquiry. Individualized essential-function analysis. Multiple options considered. Effective accommodation implemented. Follow-up conducted. That file makes a failure-to-accommodate claim close to unwinnable.

The counterfactual. Had the manager replied "we need everyone here at 8:00, that's the job," the company would face a claim in which the only documents are an accommodation request and a one-line denial — and no evidence that anyone ever asked whether the 9:00 meeting could move.

A decision framework

For every request, answer six questions in writing:

  1. Is there a limitation connected to a physical or mental condition? (Do not analyze whether it is a "disability" — after the ADAAA, that is rarely the productive question.)
  2. What are the essential functions of this position, based on evidence rather than the job description alone?
  3. What specifically can the person not do, and under what circumstances?
  4. What options exist? List at least three, including ones the employee proposed.
  5. Would each be effective, and what would it actually cost in money and operational impact?
  6. If denying, why — with the hardship or direct-threat analysis stated, and with an explanation of what alternative was offered instead.

If the answer to question 6 is "because of our policy," start over. Policies are relevant; they are not answers.

Frequently asked questions

The employee never filled out our accommodation form. Do we still have to act? Yes. There are no magic words and no required form. The duty attaches on notice.

Can we ask for the diagnosis? You may ask for information sufficient to establish that the condition is a disability and to understand the limitation and needed accommodation. Demanding a diagnosis or complete records exceeds what is permitted.

Can we require the employee to use our doctor? You may require an examination at your expense by a provider of your choosing where the documentation provided is insufficient and you have a legitimate reason to doubt it. You may not use it as a first step.

Do we have to give the accommodation they asked for? No. You may choose among effective accommodations. But if the one you choose does not work, you have not accommodated.

Is indefinite leave required? Generally not. Finite leave with a definite expected return date may be.

Can we terminate someone for misconduct caused by a disability? You may hold employees to uniform conduct standards that are job-related and consistent with business necessity. Consider whether an accommodation would prevent recurrence going forward, and apply the standard consistently — inconsistent enforcement is what turns this into a claim.

Do we have to reassign someone to an open job? If no accommodation permits performance of the current job, reassignment to a vacant position for which they are qualified is required in most circuits — as placement, not as permission to apply.

What about coworkers who resent the arrangement? Morale is not undue hardship. Do not disclose the medical basis; explain that arrangements are made for many reasons and are confidential.

Conclusion

The ADA does not ask employers to be doctors, and it does not ask them to guarantee outcomes. It asks them to notice when someone tells them a medical condition is affecting their work, to have a real conversation about it, to consider more than one option, and to write down what happened.

Employers lose these cases in three ways: a supervisor who did not recognize a request, a policy applied instead of a judgment, and a file with nothing in it. Each is a process failure, and each is fixable before it becomes a charge.

The single highest-return investment is training front-line supervisors to say one sentence: "Thanks for telling me — let me get HR involved so we can look at what might help." Everything else follows from that.

Litigation: what a failure-to-accommodate case looks like

The prima facie case. A plaintiff generally must show that they are disabled within the meaning of the Act, that the employer had notice of the disability, that with reasonable accommodation they could perform the essential functions, and that the employer refused to make the accommodation.

Notice is contested constantly, and it is where the supervisor's memory meets the employee's email. Employers should assume that any written statement connecting a medical condition to work will be produced, and that a supervisor's testimony that "she never asked for anything" will be weighed against it.

The interactive process and liability. The regulation says an employer "may" need to initiate an informal interactive process; it does not create a standalone cause of action in most circuits. But the practical effect is close to one: where the employer failed to engage, courts routinely hold that it cannot benefit from the argument that no reasonable accommodation existed, and several circuits shift the burden on that question. A plaintiff who shows the employer stonewalled generally survives summary judgment.

Damages. Compensatory and punitive damages are available under 42 U.S.C. § 1981a, subject to statutory caps that scale with employer size and that apply to the combined compensatory and punitive award. Back pay and front pay sit outside the cap. Punitive damages require malice or reckless indifference to federally protected rights, and an employer may defend on the ground that it made good-faith efforts to accommodate — which is another reason the documented process matters. Attorney's fees are available to a prevailing plaintiff.

Procedure. A charge must be filed with the EEOC within 180 days of the discriminatory act, extended to 300 days in a deferral state with a state or local fair employment agency. Failure-to-accommodate is generally treated as a discrete act, so each denial starts its own clock — though a continuing failure can present a more complicated timeliness picture. The employee must receive a right-to-sue notice before filing suit; that requirement is a claim-processing rule rather than jurisdictional, Fort Bend County v. Davis, 587 U.S. 541 (2019), so an employer that fails to raise exhaustion promptly forfeits it.

State law. Many state disability statutes cover employers with fewer than 15 employees, define disability more broadly, impose an express duty to engage in the interactive process, and provide uncapped compensatory and punitive damages. In several states the state claim is worth substantially more than the federal one, which is why the ADA analysis is rarely the whole analysis.

Building the accommodation infrastructure

Five artifacts turn accommodation from an improvised conversation into a repeatable process.

A named coordinator. One person, or one small team, receives every request. Distributed decision-making by supervisors is the most common structural cause of failure.

A supervisor script. Three sentences: acknowledge, do not diagnose, and escalate. Supervisors should never request medical documentation, never decide a request, and never discuss a coworker's medical information.

A targeted medical inquiry form. Written to ask about functional limitations and suggested accommodations, with a GINA safe harbor, and expressly not requesting records or a diagnosis.

Outcome-based job descriptions. Reviewed periodically, written in terms of results rather than physical methods, and dated. A description prepared before an accommodation request is evidence; one prepared after is a liability.

A tracking log. Date of request, coordinator, essential functions analyzed, information requested and received, options considered, decision and rationale, implementation date, follow-up date, and outcome. Reviewed annually for patterns — a department with many denials usually has a manager problem rather than a hardship problem.

Mental health conditions and the accommodations employers overlook

Mental health impairments now account for a substantial and growing share of accommodation requests, and they are the category employers handle worst — not from hostility, but because the limitations are invisible and the accommodations are unfamiliar.

Coverage is rarely in doubt. Major depressive disorder, bipolar disorder, PTSD, obsessive compulsive disorder, schizophrenia, and generalized anxiety disorder are among the conditions the regulations say will virtually always be disabilities. Episodic conditions count when active, and mitigating measures — including medication and therapy — are disregarded.

Accommodations that work, drawn from what employers actually implement:

  • Schedule flexibility for therapy appointments, or a later start where medication causes morning sedation.
  • Written instructions and follow-up emails summarizing verbal assignments, which help with concentration and memory limitations and cost nothing.
  • A quieter workspace, noise-cancelling headphones, or permission to work in a less trafficked area.
  • Additional short breaks to manage anxiety, in place of one long break.
  • Modified supervisory method — more frequent, shorter check-ins; feedback delivered in writing; advance notice of changes. Note that a different supervisor is not a required accommodation, but a change in how a supervisor communicates may be.
  • Job restructuring to reallocate a marginal function that is a particular trigger, such as cold-call sales duties for someone with severe social anxiety.
  • Telework on a partial or full basis.
  • Leave for treatment or hospitalization, coordinated with FMLA.
  • Reduced or part-time schedule for a defined period during a treatment adjustment.

The hard cases involve conduct. An employee whose condition manifests as irritability, missed deadlines, or conflict with coworkers presents a genuine tension: the employer may enforce uniform, job-related conduct standards, and it need not excuse past misconduct. But when the employee discloses a condition and asks for help, the employer must consider whether an accommodation would prevent recurrence going forward. The defensible sequence is: address the past conduct under the uniform standard, engage the interactive process about the future, and document both separately so the record does not read as discipline for disclosing a condition.

Confidentiality is especially sensitive here. Supervisors should be told the restriction — "schedule adjusted, works 9:30 to 6:00" — and nothing else. Disclosure of a mental health diagnosis to coworkers is both an ADA violation and, in many workplaces, an irreversible harm to the employee.

Substance use. Current illegal drug use is excluded from protection, but a person in recovery, or with a record of addiction, or erroneously regarded as using drugs, may be protected. Alcoholism is an impairment; an employer may still prohibit alcohol use at work and hold the employee to the same performance and conduct standards as everyone else. Leave for inpatient treatment is a common and generally reasonable accommodation.

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This article is provided for general informational purposes and does not constitute legal advice. Accommodation obligations vary by jurisdiction, and state disability laws frequently cover smaller employers and impose broader duties. Consult qualified employment counsel before denying an accommodation request or terminating an employee with a known medical condition.