The ADA and workplace accommodation: what the law requires, how the process works, and where it stops

The Americans with Disabilities Act creates defined obligations for most employers when an employee with limb loss asks for a workplace accommodation. Understanding what the law actually requires — and what it doesn't — is practical information before the conversation happens.

The Americans with Disabilities Act has been in force since 1990, which is long enough for most people to have absorbed a general impression of it without needing to understand it precisely. For someone navigating employment with limb loss — returning to work after amputation, managing a prosthetic schedule at an existing job, or starting a new position — the general impression is less useful than the actual mechanics.

What the law requires, who it reaches, and how the accommodation process works are specific things. This guide covers them.

Who the ADA covers

Employers. Title I of the ADA — the portion that governs employment — applies to private employers with 15 or more employees. Employers below that threshold are not covered under federal law. Some states have enacted their own disability discrimination statutes with lower thresholds: New York, California, Illinois, and others cover smaller employers. If you work for a smaller business, state law is worth checking.

Workers. The ADA covers employees. It does not, in most circumstances, cover independent contractors. How a working relationship is classified matters, and that classification can be contested — but as a general rule, if you are working as a contractor, the ADA’s accommodation requirements do not directly apply to that relationship.

Federal employees. Federal executive branch employees are not covered by the ADA. Parallel protections appear in Section 501 of the Rehabilitation Act of 1973. The substantive standard is nearly identical — reasonable accommodation, undue hardship — but the administrative path runs through the agency’s internal Equal Employment Opportunity office rather than an external EEOC charge. Employees of organizations receiving federal financial assistance have protections under Section 504 of the same act.

Whether limb loss qualifies as a disability under the law

The ADA defines disability as a physical or mental impairment that substantially limits one or more major life activities; a record of such an impairment; or being regarded as having such an impairment.

That definition matters because it was substantially narrowed by federal court decisions in the 1990s before Congress responded with the ADA Amendments Act of 2008 (ADAAA). The ADAAA explicitly reversed those decisions and directed that the definition should be interpreted broadly. It added language making clear that “major bodily functions” — including musculoskeletal, circulatory, and neurological functions — count as major life activities.

Under the post-ADAAA standard, limb loss almost certainly qualifies. Major life activities include walking, lifting, bending, and caring for oneself. The EEOC’s guidance implementing the ADAAA states that the amendments were intended to ensure that individuals with mobility impairments meet the disability definition without extended analysis. Courts applying the post-2008 standard have been consistent on this.

One nuance: the “regarded as” branch — being treated as disabled, even if the employer’s perception is inaccurate — also falls under the ADA’s non-discrimination provisions. It does not, however, trigger a right to reasonable accommodation. That right applies under the first two branches: actual impairment or a record of one.

The qualified individual requirement

The ADA covers qualified individuals with disabilities. Qualified means the person can perform the essential functions of the job, with or without reasonable accommodation.

Essential functions are what distinguishes the accommodation framework from a blanket exemption from work requirements. The law does not require employers to modify or eliminate essential job functions. It does require employers to accommodate qualified employees so they can perform those functions.

What counts as essential is a facts-and-circumstances determination. Job descriptions written before an accommodation question arises carry more weight than those drafted after. Factors include: how much of the job consists of the function; what happens operationally if it isn’t performed; and whether other employees currently perform the same function and could absorb it. An employer claiming a function is essential should be able to demonstrate it.

If there is a dispute about whether a function is genuinely essential — versus something that would be inconvenient to reassign — that is the territory where professional legal counsel becomes useful.

What reasonable accommodation looks like for prosthetic users

Accommodation is a change to a job, work environment, or process that allows a qualified employee to perform their work. The standard is reasonable — employers are not required to eliminate essential functions, create a new position, or absorb costs or disruption that rise to the level of undue hardship (covered below).

For amputees and prosthetic users, common accommodation categories include:

Schedule modification. Prosthetic fitting, socket adjustments, follow-up appointments, and responses to component failures are not optional, and they do not reliably occur outside of business hours. Modified start times, leave for clinical appointments, compressed workweeks, and intermittent leave are among the most commonly requested and commonly granted accommodations. Modified schedules are generally low-cost for employers.

Physical workspace changes. Workstation height, surface configuration, seating, and physical layout can affect prosthetic use — particularly for upper-limb users, and in environments where a person works standing for extended periods. These adjustments are often straightforward and inexpensive.

Parking and access. How far someone walks between parking and their workstation has a real effect on daily energy expenditure with a prosthetic limb, particularly for lower-limb users managing gait over distance. Closer parking — in environments where it is assigned or competitive — is a recognized form of accommodation.

Reduced or modified standing or walking. Extended standing on a prosthetic lower limb is physically demanding in ways that vary by amputation level, socket fit, and component. Permission to sit during portions of a task, reassignment of tasks requiring prolonged standing, or access to rest opportunities during shifts can address this.

Leave for wound and skin care. Residual limb skin breakdown, socket-related irritation, and wound management periodically require time away from work that does not fit standard sick leave structures. The Family and Medical Leave Act (FMLA) provides up to 12 weeks of unpaid, job-protected leave per year for employees who qualify — and intermittent FMLA leave, taken in smaller increments for recurring conditions, is a recognized mechanism for managing prosthetic-related care needs alongside ongoing employment. ADA accommodation and FMLA leave can operate simultaneously and interact.

This is not an exhaustive list. An accommodation is what actually solves the problem in a specific situation. The Job Accommodation Network (JAN), operated under a contract with the Department of Labor’s Office of Disability Employment Policy, maintains a searchable database of accommodation examples organized by limitation type and job function. It is a more detailed reference than any guide can be; its website is askjan.org and it operates a free confidential helpline.

How the interactive process works

The accommodation obligation is not automatic. An employee makes a request; the employer is required to engage. Both parties are supposed to do so in good faith.

The request. No particular language is required. “I need a change at work because of a medical condition” or “I’m having difficulty performing my job because of my disability” is legally sufficient to trigger the employer’s obligation to engage. A written request is better practice than a verbal one — it creates a record and produces a paper trail — but it is not a legal prerequisite. If you hand a letter to HR and get back silence, the silence is itself meaningful.

The employer’s response. Once a request is made, the employer is required to enter an interactive process — a conversation about what is needed, why, and what potential accommodations could address it. The employer can ask for documentation. They are entitled to understand the functional limitation and what the accommodation would enable. They are not entitled to a complete medical history or clinical details beyond what is necessary. A letter from a prosthetist or physician describing functional limitations and the purpose of the requested accommodation is typically sufficient documentation.

The employer’s options. The employer may grant the specific accommodation requested, propose an alternative accommodation, or — if the accommodation creates undue hardship — decline with explanation. An alternative that is effective addresses the obligation; it does not have to be the employee’s preferred choice. An alternative that does not actually enable the employee to perform the job does not resolve the matter.

Refusal to engage. Refusing to participate in the interactive process at all — a flat denial without discussion — is itself a recognized ADA violation, separate from whether the requested accommodation would ultimately have been required. This matters because it sets a floor on employer conduct independent of the outcome.

Undue hardship

Employers are not required to provide accommodations that impose undue hardship. The ADA defines undue hardship as significant difficulty or expense — assessed in light of the employer’s overall financial resources, operational structure, and workforce size.

In practice, for employers of any meaningful size and financial capacity, undue hardship is a high bar. Inconvenience, preference for established practice, and cost that is minor relative to the employer’s overall resources do not meet it. The analysis requires comparing the accommodation’s cost to the employer’s total resources — not to a single department’s budget.

The defense is legitimate but fact-specific. An accommodation that represents undue hardship for a small business may not for a large corporation. The same employer may face genuine hardship for one accommodation but not another.

If an employer claims undue hardship, they should be specific about the hardship — what it costs, why it is significant relative to available resources, and what alternatives they considered. A generic assertion of hardship without detail is not a complete response.

What the ADA’s employment provisions don’t cover

The ADA requires employers to provide reasonable accommodation for qualified individuals and to refrain from discriminating in employment decisions. It does not:

Guarantee that a specific accommodation will be granted as requested
Require modification of performance standards (performance still matters)
Require an employer to retain an employee who cannot perform essential functions, even with accommodation
Require creation of a new position
Prevent displacement of an employee in favor of a more qualified applicant

These are structural limits on the law, not loopholes. The ADA is a non-discrimination and accommodation statute. It is not a guarantee of employment outcome.

The non-discrimination provisions extend beyond accommodation to cover hiring, promotion, compensation, job assignments, training, discipline, and termination. An employer who makes an adverse employment decision because of an employee’s disability — rather than documented performance or legitimate business need — faces potential liability under that framework regardless of whether accommodation was involved.

Filing a complaint

If you believe an employer has violated the ADA, the administrative starting point for most private-sector employees is filing a charge with the EEOC. There are filing deadlines: 180 days from the discriminatory act in states without their own anti-discrimination agency, extended to 300 days in states that have one (most states). Missing the deadline generally forecloses the federal complaint pathway.

The EEOC investigates charges and may attempt conciliation. If that does not resolve the matter, the agency may issue a right-to-sue letter, which permits the employee to pursue a claim in federal court. The EEOC’s website describes the charge process in detail.

State agencies may have parallel procedures and shorter or different timelines. If a state law provides broader protections — a lower employer threshold, a different undue hardship standard — a state agency complaint may be the more useful path.

Where to start

If you’re preparing for an accommodation conversation:

Be specific about what you need. “I need to attend prosthetic appointments without losing my job” is more useful than “I need flexibility.” The more concrete the request, the more directly the interactive process can address it.
Talk to your clinician first. A letter describing your functional limitations — what you cannot do and what the accommodation would enable — is standard supporting documentation. Most prosthetists and physicians are familiar with writing them.
Review your employer’s accommodation process. Most employers above the size threshold have a formal accommodation request procedure, usually through HR. Using it is not legally required, but it typically produces a documented process with a clear timeline.
Contact the Job Accommodation Network. JAN’s helpline (1-800-526-7234) provides free, confidential guidance on accommodation options for your specific limitation type and job function. It is available to employees, not just HR departments.
Know where the EEOC process starts. If an internal request stalls or results in a flat denial without engagement, EEOC.gov describes the charge-filing process. Knowing the next step before you need it reduces the cost of a bad outcome.

Amputee News does not provide individualized legal advice. ADA coverage, accommodation outcomes, and complaint processes depend on specific employment circumstances, applicable state law, and the facts of each situation. If you are facing an employment discrimination or accommodation dispute, consult an employment attorney familiar with disability law. The EEOC’s website (eeoc.gov) and the Job Accommodation Network (askjan.org) are reliable starting points for general information.