Americans with Disabilities Act (ADA)
A landmark U.S. civil rights law that prohibits discrimination against people with disabilities in employment, public accommodations, and government services.
- What Is the Americans with Disabilities Act (ADA)?
- ADA Title I: Employment Provisions
- Reasonable Accommodations Under the ADA
- What Is Undue Hardship Under the ADA?
- ADA Compliance in the Hiring Process
- Common ADA Violations in the Workplace
- ADA vs Other Disability and Employment Laws
- ADA Accommodation Costs: What the Data Shows
- ADA Compliance Best Practices for HR Teams
- Frequently Asked Questions About the ADA
What Is the Americans with Disabilities Act (ADA)?
Key Takeaways
- ✓The ADA is a federal civil rights law signed in 1990 that bans disability-based discrimination in employment, public services, and commercial facilities.
- ✓Title I applies to employers with 15 or more employees, covering hiring, promotions, pay, termination, and all other employment terms.
- ✓Employers must provide reasonable accommodations unless doing so causes undue hardship.
- ✓The ADA Amendments Act of 2008 (ADAAA) broadened the definition of disability significantly, making it easier for individuals to qualify for protection.
- ✓About 61 million adults in the US have a disability, and the median cost of a reasonable accommodation is just $300 (JAN, 2024).
The Americans with Disabilities Act (ADA) is a federal civil rights law that prohibits discrimination against individuals with disabilities. President George H.W. Bush signed it into law on July 26, 1990. It covers five areas, organized by title: employment (Title I), state and local government services (Title II), public accommodations and commercial facilities (Title III), telecommunications (Title IV), and miscellaneous provisions (Title V). For HR professionals, Title I is the most relevant. It requires employers with 15 or more employees to provide equal employment opportunities to qualified individuals with disabilities. This includes every stage of the employment relationship: job postings, applications, interviews, hiring, training, promotions, compensation, benefits, and termination.
Why the ADA matters in HR
The ADA doesn't just protect employees from overt discrimination. It creates an obligation for employers to actively remove barriers that prevent qualified individuals from performing their jobs. This includes physical barriers (like inaccessible workspaces), procedural barriers (like inflexible scheduling policies), and communication barriers (like lack of sign language interpreters). According to the Bureau of Labor Statistics, only 34% of people with disabilities were employed in 2024, compared to 77% of people without disabilities. That gap represents a massive underutilized talent pool. Organizations that build ADA-compliant workplaces don't just avoid lawsuits. They access a broader candidate market.
The ADA Amendments Act of 2008 (ADAAA)
The original ADA had a narrow definition of disability that courts interpreted restrictively. The ADAAA fixed this by broadening the definition to cover any physical or mental impairment that "substantially limits" one or more major life activities. It also clarified that conditions that are episodic or in remission (like epilepsy, cancer, or PTSD) still qualify when active. The practical effect for employers: focus less on whether someone meets the definition of disability and more on whether you can provide a reasonable accommodation.
ADA Title I: Employment Provisions
Title I is the section HR teams deal with most. It applies to private employers, state and local governments, employment agencies, and labor unions with 15 or more employees. Federal employees are covered under the Rehabilitation Act of 1973, which applies similar protections.
Who is a "qualified individual" under the ADA?
A qualified individual is someone who meets the skill, experience, education, and other job-related requirements of the position and can perform the essential functions of the role with or without reasonable accommodation. The key phrase is "essential functions." These are the fundamental duties of the job, not marginal tasks. For example, a software engineer's essential functions include writing code and attending team meetings. Filing expense reports might be a marginal function that could be reassigned.
What counts as a disability?
Under the ADAAA, a disability is a physical or mental impairment that substantially limits one or more major life activities. Major life activities include walking, seeing, hearing, speaking, breathing, learning, reading, concentrating, communicating, and working. The law also covers major bodily functions like immune system function, cell growth, and neurological and brain function. Conditions covered include (but aren't limited to) mobility impairments, blindness, deafness, diabetes, epilepsy, cancer, HIV/AIDS, PTSD, depression, anxiety disorders, autism spectrum disorder, ADHD, and intellectual disabilities.
What the ADA prohibits in employment
Employers cannot discriminate against a qualified individual on the basis of disability in any aspect of employment. This covers job application procedures, hiring, firing, advancement, compensation, job training, and other terms and conditions of employment. It also prohibits retaliation against anyone who files a disability discrimination charge, participates in an investigation, or opposes discriminatory practices.
Reasonable Accommodations Under the ADA
A reasonable accommodation is any modification or adjustment to a job, the work environment, or the way things are usually done that allows a qualified person with a disability to apply for a job, perform job duties, or enjoy equal benefits and privileges of employment. The Job Accommodation Network (JAN) reports that 49.4% of accommodations cost nothing at all, and the median cost of those that do cost something is just $300.
Common types of reasonable accommodations
Accommodations vary widely depending on the individual and the role. They might include modified work schedules, telecommuting or remote work options, ergonomic furniture or adaptive equipment, accessible parking, reassignment to a vacant position, job restructuring (removing marginal functions), modified training materials or testing procedures, sign language interpreters, screen reading software, or extended deadlines for non-time-sensitive tasks.
The interactive process
When an employee requests an accommodation (or when the employer recognizes that one may be needed), the ADA requires an "interactive process." This is a conversation between the employer and the employee to identify the specific limitations caused by the disability and determine what accommodations might be effective. Neither party can unilaterally dictate the outcome. The employer doesn't have to provide the exact accommodation the employee requests, but they must provide an effective one. Documentation of this process matters: it protects both sides if a dispute arises later.
Medical documentation and privacy
Employers can request medical documentation to verify the need for an accommodation, but only information directly related to the functional limitation and the accommodation request. They cannot demand full medical records, a specific diagnosis, or information about unrelated conditions. All medical information must be kept in a confidential file separate from the employee's personnel file. Only supervisors who need to know about the accommodation, safety personnel, and government investigators should have access.
What Is Undue Hardship Under the ADA?
An employer doesn't have to provide an accommodation that would impose an "undue hardship" on the operation of the business. But the bar for proving undue hardship is high. It means significant difficulty or expense relative to the employer's size, financial resources, and the nature of the operation.
Factors courts consider
Courts evaluate undue hardship on a case-by-case basis. They look at the nature and net cost of the accommodation, the overall financial resources of the facility and the broader organization, the number of employees, the effect on expenses and resources, and the impact on the operation of the facility. A $10,000 accommodation might be undue hardship for a 20-person nonprofit but perfectly reasonable for a Fortune 500 company. Cost alone is rarely enough to establish undue hardship for large employers.
What doesn't qualify as undue hardship
Employer inconvenience, coworker complaints about perceived "special treatment," or administrative hassle don't count as undue hardship. Neither does the fact that providing the accommodation would require some restructuring of job duties, as long as the essential functions can still be performed. If an accommodation is too expensive, the employer must consider whether external funding sources (like state vocational rehabilitation agencies or tax credits) could offset the cost before denying the request.
ADA Compliance in the Hiring Process
The ADA places specific restrictions on what employers can do at each stage of hiring. Understanding these rules prevents discrimination claims and keeps the process fair.
Job postings and applications
Job postings must accurately describe essential functions without listing requirements that would screen out people with disabilities unnecessarily. For example, requiring a driver's license for a desk job that doesn't involve driving could violate the ADA. Application processes must be accessible to people with disabilities, including online forms compatible with screen readers and alternative application methods for those who need them.
Interview restrictions
During interviews, employers cannot ask about the existence, nature, or severity of a disability. They can't ask about medical history, workers' compensation claims, or prescription medications. They can ask whether the candidate can perform specific essential functions of the job, with or without reasonable accommodation. They can also ask candidates to demonstrate or describe how they would perform essential tasks.
Medical exams and the conditional offer stage
Pre-offer medical exams are prohibited. After a conditional job offer is made, employers can require a medical exam, but only if all entering employees in the same job category are subject to the same requirement. The exam results can't be used to withdraw the offer unless the employer can show the individual can't perform essential functions even with reasonable accommodation, or that they would pose a "direct threat" to safety.
Common ADA Violations in the Workplace
The EEOC received 25,004 disability discrimination charges in fiscal year 2023, making it the second most common type of workplace discrimination charge. Many violations stem from ignorance rather than malice. Here are the ones HR teams encounter most often.
Failing to engage in the interactive process
When an employee discloses a disability and requests an accommodation, ignoring the request or stalling without a clear reason is itself a violation. Courts have ruled against employers who simply didn't respond to accommodation requests, even when a valid accommodation existed. The fix is straightforward: acknowledge every request promptly, schedule a conversation within a few days, and document every step.
Requiring unnecessary medical information
Asking for a complete medical history or a specific diagnosis goes beyond what the ADA allows. Employers can ask for documentation showing the employee has a disability and how it limits their ability to perform specific job functions. A letter from a healthcare provider describing functional limitations and suggested accommodations is typically sufficient.
Treating accommodation requests as performance problems
When an employee's disability affects their performance and they request an accommodation, the employer must consider the accommodation before taking disciplinary action. Firing someone for attendance issues without first exploring whether a modified schedule or remote work arrangement could solve the problem is a common source of ADA claims.
Inaccessible technology
Company websites, internal tools, and software systems that don't work with assistive technologies (screen readers, voice recognition, alternative input devices) create barriers for employees with disabilities. This is an increasingly common area of ADA complaints, especially as more work moves to digital platforms.
ADA vs Other Disability and Employment Laws
The ADA doesn't exist in isolation. It overlaps with several other federal and state laws that HR teams need to track simultaneously.
| Law | What It Covers | Key Difference from ADA |
|---|---|---|
| Rehabilitation Act of 1973 (Section 503) | Federal contractors and subcontractors with contracts over $10,000 | Requires affirmative action in hiring people with disabilities, not just non-discrimination |
| Family and Medical Leave Act (FMLA) | Eligible employees at employers with 50+ workers | Provides up to 12 weeks unpaid leave for serious health conditions; ADA may require additional leave as an accommodation |
| State disability discrimination laws | Varies by state; many cover smaller employers | Some states (like California's FEHA) have broader protections than the ADA, covering employers with 5+ employees |
| Workers' Compensation | Employees injured on the job | Covers workplace injuries regardless of disability status; ADA covers disability in all employment contexts |
| Genetic Information Nondiscrimination Act (GINA) | Genetic information and family medical history | Prohibits using genetic information in employment decisions; ADA focuses on current disabilities and impairments |
ADA Accommodation Costs: What the Data Shows
One of the biggest misconceptions about the ADA is that accommodations are expensive. The Job Accommodation Network (JAN), a service funded by the U.S. Department of Labor, has tracked accommodation costs since 1993. Their data consistently shows that the vast majority of accommodations cost little or nothing.
- 49.4% of accommodations cost absolutely nothing to implement (JAN, 2024)
- The median one-time expenditure for accommodations that do have a cost is $300 (JAN, 2024)
- Employers report an average return of $28.69 for every $1 invested in accommodations (JAN cost-benefit analysis)
- 59% of employers say accommodations had no cost at all; among those with costs, the typical employer spent $500 (JAN, 2024)
- The IRS Disabled Access Credit (Section 44) gives eligible small businesses a tax credit of up to $5,000 annually for ADA compliance costs
- The Architectural Barrier Removal Tax Deduction (Section 190) allows all businesses to deduct up to $15,000 per year for removing physical barriers
ADA Compliance Best Practices for HR Teams
Staying ADA compliant isn't a one-time project. It requires ongoing attention to policies, training, and workplace culture. These practices reduce legal risk and create a genuinely inclusive environment.
Train managers on the interactive process
Most ADA violations happen at the manager level, not because of company policy. A manager who says "we can't make exceptions" when an employee requests a schedule change is creating legal liability. Train all people managers to recognize accommodation requests (even informal ones), respond without judgment, and escalate to HR immediately. Annual training is the minimum; reinforce it during onboarding for new managers.
Audit job descriptions for essential vs marginal functions
Review every job description to clearly distinguish between essential functions and marginal tasks. Essential functions are the reason the role exists. Marginal functions are tasks that could be reassigned without changing the fundamental nature of the job. This distinction matters in accommodation requests and legal proceedings. If your job descriptions list 15 "required" duties without distinguishing essential from marginal, you'll have a harder time defending your position.
Make technology accessible by default
Build accessibility into your procurement process. When evaluating new software, internal tools, or digital platforms, require vendors to demonstrate WCAG 2.1 AA compliance. This is far cheaper than retrofitting inaccessible systems after employees need accommodations. Apply the same standard to your careers page and application process.
Create a centralized accommodation tracking system
Document every accommodation request, the interactive process, the outcome, and any follow-up. This creates an audit trail that protects the company and ensures consistency. Without centralized tracking, different managers handle requests differently, which creates both legal risk and inequitable outcomes.
Review policies through an ADA lens annually
Attendance policies, return-to-office mandates, performance standards, and testing requirements can all create unintentional barriers for people with disabilities. Review these annually with ADA compliance in mind. Ask: could this policy disproportionately affect employees with disabilities? If yes, build in an accommodation process.
Frequently Asked Questions
Does the ADA apply to small businesses?
Can an employer ask if a candidate has a disability during an interview?
Is mental health covered under the ADA?
What should an employee do if their accommodation request is denied?
Does remote work count as a reasonable accommodation?
Can an employer fire someone with a disability?
Written by Adithyan RK