The qualified disabled person concept is how the ADA sets the boundary between legitimate job requirements and disability discrimination. An employer can't refuse to hire or retain someone because of a disability. But the employer can require that the person meet the actual job requirements, including performing the essential functions of the role with or without reasonable accommodation. The analysis lives in that overlap: what are the essential functions, what accommodations would let the person perform them, and what would cause undue hardship to the employer. Most ADA cases that make it to litigation turn on one of those three questions.
What Qualifies Someone as a Qualified Disabled Person Two conditions must be met. First, the person has a disability as defined by the ADA. The post-2008 ADA Amendments Act definition is broad: 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. Courts rarely dismiss modern ADA cases on whether the plaintiff has a disability.
Second, the person meets the job's skill, experience, education, and other requirements, and can perform the essential functions of the job with or without reasonable accommodation. Both conditions have to be true. The analysis isn't "does this person have a disability" but "is this person qualified for this job despite the disability."
Essential Functions: The Core of the Qualified Analysis Essential functions are the fundamental job duties the position exists to perform. The EEOC's regulations list factors that help determine whether a function is essential: the employer's judgment as stated in the job description , the consequences of not performing the function, the amount of time spent performing the function, whether the position exists specifically to perform the function, and how the function is performed by other employees in similar positions.
The distinction between essential and marginal functions matters enormously. Requirements that are actually marginal (tasks performed occasionally or that could be shifted to other employees without significant disruption) can't be used to screen out an otherwise qualified disabled person. Requirements that are genuinely essential can, because the ADA doesn't require the employer to eliminate essential functions as an accommodation.
Who Decides What's Essential? The employer gets significant deference, especially when the essential functions are documented in the job description before the ADA issue arises. Courts are skeptical of employers who suddenly declare a function essential only when an employee with a disability asks for accommodation around it. Maintaining current, accurate job descriptions that clearly distinguish essential from marginal functions is one of the most important structural protections an employer can have.
Reasonable Accommodation and the Interactive Process Once an employee or applicant is identified as a qualified disabled person needing an accommodation, the employer must engage in the interactive process to identify effective accommodations. The process has no fixed script but generally includes: asking the employee what they need and why, requesting medical documentation if the need isn't obvious, evaluating whether the requested accommodation is reasonable, considering alternatives, and implementing a chosen accommodation.
Reasonable accommodations can include modified schedules, physical modifications to the workspace, assistive technology, reasonable accommodation through reassignment to a vacant position, leave for medical treatment, and many others. Undue hardship is the employer's defense, but the bar is high: significant difficulty or expense, not mere inconvenience.
Building an ADA Program That Protects Qualified Disabled Persons Five practices distinguish employers that handle ADA compliance well. Maintain accurate job descriptions with clearly marked essential functions. Train managers to recognize accommodation requests in any form (employees rarely use the phrase "ADA accommodation"). Centralize the interactive process through HR or employee relations rather than leaving it to individual managers. Document each step of the process including offers, counter-offers, and final decisions. And include disability concerns explicitly in your grievance and reporting pathways.
Confidentiality is specific under the ADA: medical information must be stored separately from personnel files and shared only with a limited set of people (supervisors who need to implement accommodations, first aid personnel, government officials investigating compliance). Violations of the confidentiality rule generate their own line of ADA cases. AllVoices' HR case management platform gives employee relations teams the structured documentation and confidentiality controls that ADA cases require. The EEOC publishes current ADA enforcement guidance at eeoc.gov/disability-discrimination , and the Department of Labor at dol.gov/agencies/odep covers workforce resources for disability inclusion.
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