How to Determine Reasonable Accommodations under the ADA

Under the Americans with Disabilities Act (ADA), a disability is defined 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. The ADA Amendments Act of 2008 significantly broadened this definition, and today conditions such as migraines, arthritis, anxiety disorders, diabetes, and back pain can qualify depending on how they affect the individual's functioning. The threshold for 'substantially limits' is intentionally construed broadly—it does not require that a condition be severe or permanent to meet the standard. Employees who qualify as disabled under the ADA are entitled to reasonable accommodations that allow them to perform the essential functions of their job, unless doing so would impose an undue hardship on the employer. HR professionals must apply this analysis carefully for each individual request, rather than making categorical determinations about whether a particular condition qualifies.

The ADA interactive process is a required, good-faith dialogue between an employer and an employee (or job applicant) seeking a reasonable accommodation. It is not a formal legal proceeding but rather a collaborative conversation designed to identify accommodations that allow the employee to perform their essential job functions. Employers are legally obligated to engage in this process promptly when an employee requests an accommodation or when it becomes apparent that a medical condition may be affecting job performance. During the interactive process, the employer may request medical documentation that supports the need for an accommodation and describes functional limitations, but cannot ask for a diagnosis or more information than is necessary. The employer and employee then explore potential accommodation options together. Failure to engage in the interactive process—even if the accommodation itself might have been denied—creates significant legal liability. Documenting every step of the process is essential to demonstrate good faith and protect the organization if a complaint or lawsuit arises.

The ADA and FMLA are distinct laws with different purposes, eligibility criteria, and obligations, though they frequently intersect when employees request leave for medical conditions. FMLA provides eligible employees up to 12 weeks of unpaid, job-protected leave per year for qualifying serious health conditions, and applies to employers with 50 or more employees. The ADA, by contrast, does not provide a specific leave entitlement but may require an employer to provide leave as a reasonable accommodation—including beyond the FMLA period—unless doing so creates undue hardship. Critically, not all ADA-covered conditions qualify for FMLA leave, and not all FMLA-qualifying conditions constitute ADA disabilities. HR professionals must evaluate each leave request under both statutes simultaneously and ensure that running leave concurrently where appropriate, providing required notices, and documenting the analysis under each law are all handled correctly. Treating every extended leave request as solely an FMLA matter without considering ADA accommodation obligations is one of the most common and costly compliance errors HR departments make.

Reasonable accommodations span a wide range of modifications to job duties, schedules, environments, or equipment that allow a qualified individual with a disability to perform the essential functions of their role. Common examples include flexible or modified schedules, remote work arrangements, ergonomic equipment, modified leave policies, reassignment to a vacant position, accessible parking, and changes to communication methods. There is no single accommodations list—what is reasonable is highly context-specific and must be evaluated based on the employee's functional limitations, the nature of the essential job functions, and the employer's resources and operational needs. An accommodation is deemed unreasonable if it would impose an 'undue hardship'—a significant difficulty or expense relative to the employer's size, financial resources, and the nature of the business. The undue hardship standard is not easily met and requires a documented, fact-specific analysis; courts have held that cost alone rarely justifies denial. Employers should always consider whether alternatives to the requested accommodation would be effective before declining a request.

Thorough documentation of ADA accommodation requests is one of the most important risk management practices HR can implement. Documentation should begin at the point of first request and continue through every step of the interactive process. Key records to maintain include: the date and nature of the employee's initial request, all medical documentation received (stored separately from personnel files in a confidential medical file), notes from interactive process meetings including who participated, what was discussed, and what options were explored, the accommodation decision and the reasoning supporting it, any follow-up communications, and records of whether the accommodation was implemented as agreed. If an accommodation request is denied, the undue hardship analysis should be documented in writing with specific supporting evidence—not just a general statement that it's too costly or disruptive. Consistent, contemporaneous documentation demonstrates good faith, which is the cornerstone of ADA defense in both agency investigations and litigation. HR should audit accommodation files periodically to ensure records are complete and organized.