The Americans with Disabilities Act — US federal civil-rights law that prohibits employment discrimination and requires reasonable accommodations for qualified individuals with disabilities.
The Americans with Disabilities Act (ADA) is one of the most consequential civil-rights laws in modern US history. Enacted in 1990 and substantially expanded by the ADA Amendments Act of 2008 (ADAAA), it prohibits discrimination against qualified individuals with disabilities in employment, public services, public accommodations, transportation, and telecommunications. Title I of the ADA — the employment title — applies to private employers with 15 or more employees, all state and local government employers, employment agencies, and labor unions, and it shapes nearly every HR decision in covered organizations.
The ADA defines 'disability' broadly 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 2008 ADAAA explicitly rejected the narrower Supreme Court interpretations of the 1990s and instructed courts to construe 'disability' broadly. Under current law, conditions including diabetes, epilepsy, depression, anxiety, ADHD, autism, cancer, multiple sclerosis, HIV, learning disabilities, mobility impairments, vision and hearing impairments, and many others are typically covered. Even episodic conditions (like seasonal depression or migraines that flare periodically) qualify if they would substantially limit a major life activity when active.
A 'qualified individual with a disability' under Title I is someone who, with or without reasonable accommodation, can perform the essential functions of the job. Employers must distinguish carefully between essential functions (the core duties of the role) and marginal functions (peripheral or occasional duties). A delivery driver's essential function is driving; the marginal function might be occasional warehouse stocking. An employee unable to do the marginal function isn't unqualified for the role if accommodations can address the essential ones.
The heart of the ADA is the reasonable-accommodation requirement. An employer must provide reasonable accommodations — modifications or adjustments to the work environment, schedule, or processes — that enable a qualified individual with a disability to perform essential functions or enjoy equal employment benefits. Common accommodations include:
• Modified work schedules (later start time for medication side effects, intermittent leave for chemotherapy, flexible hours for chronic-pain management) • Telework / remote work arrangements • Assistive technology (screen readers, voice recognition, ergonomic equipment) • Accessible workstations (sit-stand desk, special seating, accessible parking, modified building access) • Job restructuring (reassigning marginal functions, providing additional breaks) • Reassignment to a vacant position (if the employee can no longer perform the current job even with accommodation, and a vacant equivalent role exists) • Modified policies (allowing service animals on premises, relaxed attendance policy for disability-related absences) • Sign language interpreters or written communication for deaf employees • Dimming lights, reducing fluorescent triggers, or noise-cancelling environments for sensory disabilities
The interactive process is mandatory and is itself an enforceable obligation. When an employee requests accommodation (by any means — they don't have to use specific magic words like 'ADA' or 'reasonable accommodation'), the employer must engage in a good-faith dialogue to identify potential accommodations. The process typically includes: confirming the employee's limitations, discussing options that might address them, requesting medical documentation if needed (only what's necessary to verify the disability and limitation, not the full medical history), evaluating effectiveness and cost, and choosing an accommodation that is reasonable and effective. Failure to engage in the interactive process is itself a violation, even if the employer ultimately could not have provided any accommodation.
The employer can deny an accommodation only if it would cause 'undue hardship' — significant difficulty or expense considering the employer's size, resources, and the nature of the operation. The undue-hardship defense is rarely successful for accommodations that cost a few hundred or even a few thousand dollars. Job Accommodation Network (JAN) studies show most accommodations cost under $500.
The ADA also prohibits direct discrimination — refusing to hire, terminating, or demoting an employee because of their disability or perceived disability — and harassment based on disability. Pre-employment medical inquiries and exams are restricted: employers can ask about ability to perform essential functions but cannot ask about disability or require medical exams until after a conditional job offer (and then only if required of all candidates in the same role). Drug testing is permitted because it tests for current illegal drug use, which is excluded from ADA protection.
The ADA is enforced by the Equal Employment Opportunity Commission (EEOC). Charges must be filed within 180 days of the discriminatory act (300 days where a state or local FEPA exists). Damages can include back pay, front pay, hiring or reinstatement, reasonable accommodation, compensatory damages for emotional distress, punitive damages for malicious or reckless violations (capped at $50,000 for employers of 15-100, $100,000 for 101-200, $200,000 for 201-500, $300,000 for 500+), plus attorneys' fees.
State laws often expand ADA protections. California's FEHA covers employers of 5+, defines disability more broadly, and has no damages cap. New York City's HRL covers employers of 4+ and includes 'perceived' disability without ADAAA limitations. Massachusetts, Connecticut, and several others have similar expansions.
Documenting accommodation requests, the interactive process, and final outcomes is the single most important defense against ADA claims. Modern HR platforms include accommodation-request workflows that capture each step (request, medical documentation, options considered, decision rationale, follow-up), creating an audit trail that demonstrates good-faith engagement. Manager training on the interactive process is similarly critical — most ADA failures trace back to a manager dismissing or ignoring an early request before HR ever heard about it.
Per the ADA, we provided a sit-stand desk and a modified schedule (10 AM start) as reasonable accommodations for an employee's back injury and treatment-related fatigue. The interactive process took two weeks and is fully documented in our HRIS.
Peoplifi unifies HR, payroll, time tracking, and performance into one modern platform — so concepts like ADA stay handled, not stuck in spreadsheets.
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