Direct Threat Defense Under Fair Housing and ADA

The direct threat defense under the Fair Housing Act and the ADA lets a landlord, employer, or business exclude a person with a disability only when that person’s condition or conduct creates a significant risk of substantial harm that no reasonable accommodation can eliminate. The bar is deliberately high. Subjective fear, stereotypes about a diagnosis, and speculation about what someone might do are not enough. The entity has to do actual work first: an individualized assessment based on objective evidence, and a genuine look at whether an accommodation would fix the problem.

If a landlord, employer, or public business has invoked this defense against you, the question is whether they followed the steps the law requires. Most direct threat claims fall apart in court because the entity skipped those steps or treated them as a formality.

What Counts as a Direct Threat

Three federal frameworks define the term, and each has its own scope.

Under ADA Title I (employment), a direct threat is a significant risk of substantial harm to the health or safety of the individual or others in the workplace that cannot be eliminated or reduced by reasonable accommodation.¹

Under ADA Title III (public accommodations like restaurants, hotels, and theaters), a direct threat is a significant risk to the health or safety of others that cannot be eliminated by modifying policies, practices, or procedures.²

Under the Fair Housing Act, a dwelling need not be made available to someone whose tenancy would be a direct threat to the health or safety of other individuals or would result in substantial physical damage to the property of others.³

One important difference. Only ADA Title I explicitly covers risk to the person themselves. The Supreme Court confirmed in Chevron U.S.A. Inc. v. Echazabal that an employer may screen out a worker whose disability makes the job dangerous to that worker’s own health, not just to coworkers.⁴ Neither the Fair Housing Act nor ADA Title III extends the defense to risk a person poses only to themselves. A landlord cannot invoke the defense on the theory that living independently might be dangerous for the tenant.

Across all three, “significant risk” means more than slightly elevated, and “substantial harm” means more than inconvenience. A speculative or remote possibility of harm never satisfies the standard.⁵

The Four-Factor Individualized Assessment

Before excluding anyone, the entity has to conduct an individualized assessment. Federal regulations and case law, tracing back to the Supreme Court’s decision in School Board of Nassau County v. Arline, require analysis of four specific factors:⁶

The duration of the risk. A contagious condition expected to resolve after two weeks of treatment is different from an unmanaged condition expected to persist indefinitely.
The nature and severity of the potential harm. Minor inconvenience is not in the same category as serious bodily injury.
The likelihood that harm will actually occur. Remote possibilities do not count. A person with HIV in a normal workplace poses essentially zero transmission risk through ordinary contact, even though the disease itself is serious.
The imminence of the potential harm. A medical opinion that a condition might worsen in eight to ten years does not establish imminent danger.

The assessment has to rely on reasonable medical judgment using current medical knowledge or the best available objective evidence.⁷ A decision based on neighborhood gossip, a landlord’s discomfort, or outdated assumptions about mental illness will not hold up. This is where most direct threat determinations collapse: the decision-maker skipped the individualized analysis entirely, or ran through it as a checkbox exercise.

What Medical Evidence Is Required

The strength of the assessment depends on the medical evidence behind it. In employment, an employer that reasonably believes a worker may pose a direct threat can require a medical examination by a healthcare professional of the employer’s choosing, but the employer pays for it.⁸ The exam has to be job-related and consistent with business necessity, limited to whether the employee can do the job safely with or without accommodation. That reasonable belief must itself rest on objective evidence, like documented incidents or observable behavior changes, not on general assumptions about a diagnosis.

Medical information can come from the individual, treating physicians, rehabilitation counselors, or specialists. No single source automatically outweighs another. What matters is whether the final decision reflects reasonable medical judgment based on current knowledge.

Mitigating measures matter too. If medication, therapy, or an assistive device reduces the risk to an acceptable level, the person is not a direct threat. The fact that someone takes medication with side effects that could affect concentration does not automatically make them dangerous; the EEOC requires a case-by-case evaluation of how those side effects actually affect the person’s ability to function safely, including whether they have had any safety problems on the medication.⁹ Employers cannot monitor whether an employee is taking their medication; medication monitoring is not a reasonable accommodation.

Reasonable Accommodations Come First

Even when the assessment identifies a genuine risk, the analysis is not over. The entity has to determine whether a reasonable accommodation would eliminate or reduce the threat to an acceptable level. This applies across all three frameworks. Under ADA Title III, a business has to consider whether modifying policies or providing auxiliary aids would mitigate the risk before excluding anyone.⁷

A housing provider might adjust a no-pets policy to allow an assistance animal that helps manage a resident’s condition. An employer might restructure a job so the worker avoids the one task that creates danger. A gym might limit a member to certain equipment rather than revoking membership entirely. Exclusion is a last resort.

An entity can push back if the accommodation would impose an undue hardship. In employment, undue hardship means significant difficulty or expense relative to the employer’s resources and operations, weighed against factors like the cost of the accommodation, the facility’s financial resources, the number of employees, and the impact on business operations.¹⁰ A ten-person restaurant faces a different calculation than a national hotel chain. Vague assertions that an accommodation would be “too difficult” get rejected routinely.

One limit worth knowing. Employers are not required to excuse violations of uniformly applied conduct rules that are job-related and consistent with business necessity. If an employee threatens or assaults a coworker, the employer can enforce its violence policy. Direct threat and reasonable accommodation analysis apply to disability-related behavior, not to conduct rules that apply equally to everyone.¹⁰

How the Defense Works in Housing

The Fair Housing Act’s direct threat provision at 42 U.S.C. § 3604(f)(9) gives landlords two grounds for exclusion: the tenant would pose a direct threat to the health or safety of other residents, or the tenant would cause substantial physical damage to the property of others.³ The property damage prong is unique to housing law and does not appear in the ADA.

There is no fixed dollar amount that defines “substantial physical damage.” Courts require particularized proof of dangerous behavior based on objective evidence. Occasional noise complaints or scuffed common-area walls do not meet the threshold. Documented incidents of fire-setting, deliberate flooding, or repeated physical destruction of shared spaces are the kinds of evidence courts look for. Timing matters too: if a landlord renewed the lease already knowing about problematic behavior, citing that same behavior later to justify eviction looks inconsistent and weakens the claim.

Assistance Animals

Landlords have to make reasonable accommodations for assistance animals, including waiving no-pet policies. A landlord can deny a specific assistance animal only by showing that this particular animal poses a direct threat to others, even after considering other accommodations that might reduce the risk. Breed-based restrictions are not enough. HUD guidance is explicit that the determination must focus on the individual animal’s actual behavior, not on speculation about particular breeds.¹¹

How the Defense Works in Employment

ADA Title I lets employers include “not posing a direct threat” as a qualification standard for any position.¹² The implementing regulation extends this to threats to the individual’s own safety and spells out the same four assessment factors.¹ The assessment has to evaluate the individual’s present ability to safely perform the essential functions of the job. A history of dangerous behavior that has since been treated or managed cannot justify a current finding of direct threat.

Who Has to Prove What

In most federal circuits, direct threat is treated as an affirmative defense, meaning the employer has to prove the threat exists. The Ninth Circuit’s model jury instructions place the burden squarely on the employer to show the plaintiff posed a direct threat that could not be eliminated by reasonable accommodation.¹³ The EEOC takes the same position. But at least one circuit has placed the burden on the employee, and others use a burden-shifting approach that turns on whether essential job functions inherently involve safety concerns. The Supreme Court has not resolved this split, so the answer depends on where the case is filed.

How the Defense Works in Public Accommodations

A business open to the public is not required to serve someone who poses a direct threat to the health or safety of others.² The same individualized assessment applies: nature, duration, and severity of the risk, probability of actual harm, and whether policy modifications or auxiliary aids would reduce the danger.⁷ Speculation, stereotypes, and generalizations about people with disabilities are not permissible bases for the decision.

ADA Title II applies the same standard to state and local government services, including public transit, municipal recreation programs, and government-run facilities.¹⁴

When a business does exclude someone after a proper assessment, the exclusion has to be no broader than necessary. If the risk is limited to one activity, the business should restrict that activity rather than banning the person from the entire facility. A water park that decides a patron’s condition makes one ride dangerous should not revoke the patron’s admission to the whole park.

Contagious Diseases

The framework applies with particular force to communicable disease. The Arline decision established that risk assessments for contagious conditions must rely on objective, scientific information about how the disease transmits, how long the person remains infectious, how severe the potential harm is, and how likely transmission actually is in the relevant setting.⁶ Courts generally defer to the reasonable medical judgments of public health officials. A good-faith belief that a risk exists does not shield an entity from liability if that belief is not supported by objective evidence.

Challenging a Direct Threat Determination

If a landlord, employer, or business has wrongly invoked the defense against you, the path forward depends on which law applies.

Housing

File a discrimination complaint with HUD’s Office of Fair Housing and Equal Opportunity online, by phone at 1-800-669-9777, or by mail.¹⁵ You need your name and address, the name and address of the person or organization you are filing against, the address of the housing involved, a description of what happened, and the dates. The deadline is one year from the last discriminatory act.¹⁶ You can also file a private lawsuit in federal or state court within two years, and time spent on an active HUD complaint does not count against that two-year clock.¹⁷ Retaliation against anyone who files, testifies, or participates in the investigation is illegal.¹⁸

Public Accommodations and Government Services

For disputes under ADA Titles II and III, the Department of Justice runs a voluntary mediation program that is free to both parties.¹⁹ A successful mediation produces a binding agreement. If mediation fails, you keep the right to file a private lawsuit.

Employment

Title I disputes go through the EEOC. You have to file a charge of discrimination before you can bring a lawsuit.

What It Costs Entities to Get This Wrong

Invoking direct threat without the evidence to back it up creates real financial exposure.

Under the Fair Housing Act, an administrative law judge can impose civil penalties of up to $26,262 for a first offense, $65,653 if the respondent has been found to have committed a prior violation within five years, and $131,308 for two or more prior violations within seven years.²⁰ Private lawsuits can add compensatory damages and attorney’s fees.

Under ADA Title III, private plaintiffs can obtain injunctive relief plus attorney’s fees and litigation costs. They generally cannot recover compensatory or punitive damages. When the Attorney General brings an enforcement action, however, the court can award monetary damages to aggrieved individuals and impose civil penalties set by statute at up to $50,000 for a first violation and $100,000 for subsequent violations, with those amounts adjusted upward for inflation.²¹ Some states layer their own remedies on top of federal law.

The defense exists for genuine safety concerns backed by real evidence. Where the entity skipped the individualized assessment, leaned on stereotypes about a diagnosis, or refused to consider accommodation, the record it leaves behind is often the record that establishes liability.

1
eCFR. 29 CFR 1630.2 – Definitions
2
Office of the Law Revision Counsel. 42 USC 12182 – Prohibition of Discrimination by Public Accommodations
3
Office of the Law Revision Counsel. 42 USC 3604 – Discrimination in the Sale or Rental of Housing and Other Prohibited Practices
4
Justia Law. Chevron USA Inc v Echazabal, 536 US 73 (2002)
5
U.S. Equal Employment Opportunity Commission. The ADA Your Responsibilities as an Employer
6
Legal Information Institute. School Board of Nassau County, Florida v Arline, 480 US 273 (1987)
7
eCFR. 28 CFR 36.208 – Direct Threat
8
U.S. Equal Employment Opportunity Commission. Enforcement Guidance on Disability-Related Inquiries and Medical Examinations of Employees Under the ADA
9
U.S. Equal Employment Opportunity Commission. Enforcement Guidance on the ADA and Psychiatric Disabilities
10
U.S. Equal Employment Opportunity Commission. Enforcement Guidance on Reasonable Accommodation and Undue Hardship Under the ADA
11
U.S. Department of Housing and Urban Development. Assistance Animals
12
Office of the Law Revision Counsel. 42 USC 12113 – Defenses
13
United States Court of Appeals for the Ninth Circuit. 12.12 ADA – Defenses – Direct Threat
14
ADA.gov. Americans with Disabilities Act Title II Regulations
15
U.S. Department of Housing and Urban Development. Report Housing Discrimination
16
Office of the Law Revision Counsel. 42 USC 3610 – Administrative Enforcement
17
Office of the Law Revision Counsel. 42 USC 3613 – Enforcement by Private Persons
18
U.S. Department of Housing and Urban Development. Learn About FHEO’s Process to Report and Investigate Housing Discrimination
19
ADA.gov. The ADA Mediation Program Questions and Answers
20
eCFR. 24 CFR 180.671 – Assessing Civil Penalties for Fair Housing Act Cases
21
Office of the Law Revision Counsel. 42 USC 12188 – Enforcement