Can an Employer Ask Why You Are Sick? HIPAA, FMLA, and ADA Rules

Yes, an employer can ask why you are sick, but the questions have to stay work-related. Your boss can ask the general nature of your illness, when you expect to be back, and whether you’ll have any limitations when you return. What they generally cannot do is press you for a specific diagnosis, your medications, your test results, or your family medical history. Three federal laws set those limits: the Americans with Disabilities Act, the Family and Medical Leave Act, and the Genetic Information Nondiscrimination Act.

What Your Boss Can Ask on a Routine Sick Day

Basic, practical questions are fair game. Saying “I have a stomach bug” or “I’m running a fever” gives your employer what they actually need: a rough sense of the situation, an idea of how long you’ll be out, and whether you’ll come back with any restrictions. Asking whether you’re seeing a doctor is also reasonable.

The purpose behind the question is what matters. Managing the schedule is a legitimate reason to ask when you’ll return. Fishing for clinical details is not. Under the ADA, any medical inquiry directed at a current employee has to be job-related and consistent with business necessity.¹ A quick “what’s wrong?” when you call in usually doesn’t rise to the level of a formal medical inquiry, but an employer who keeps pushing for clinical detail is on shaky ground.²

The same rules apply if you’re out for a mental health reason. Your employer can ask when you’ll return and whether you can do your work. They cannot demand your diagnosis or the details of your therapy. The Department of Labor has also made clear that even on an FMLA certification form for a mental health absence, a diagnosis isn’t required — only enough medical facts to support the need for leave. Employers are specifically barred from threatening to disclose an employee’s mental health condition to discourage them from taking FMLA leave.³

What Your Employer Cannot Demand

For an ordinary sick day, you don’t have to give up:

A specific diagnosis
Your treatment plan or prescriptions
Test results or clinical records
Your family medical history

Simple curiosity isn’t a legitimate reason for a disability-related inquiry, and the ADA restricts employers accordingly.² Family medical history is off-limits regardless of context, because GINA treats it as genetic information.

The HIPAA Misconception

Many workers think HIPAA blocks their boss from asking about their health. It doesn’t. HIPAA regulates health care providers, health plans, and clearinghouses. It doesn’t regulate employers. As HHS puts it, “the Privacy Rule applies to the disclosures made by your health care provider, not the questions your employer may ask.”⁴ Employers aren’t covered entities under HIPAA at all.⁵

What HIPAA does prevent is your employer calling your doctor and getting information directly. Your provider can’t share your health information with your employer without your written authorization.⁴ Separately, the ADA imposes strict confidentiality rules on any medical information your employer does gather.

When Employers Are Allowed to Ask More

A few situations open the door to more detailed questions. Each has its own limits.

FMLA Certification

If you ask for leave under the Family and Medical Leave Act, your employer can require a medical certification from your provider. The certification must show the date the condition began, how long it’s expected to last, and enough medical facts to support the need for leave.⁶ “Medical facts” can include symptoms, hospitalization, doctor visits, prescribed medication, or referrals — but the standard is “sufficient to support the need for leave,” not everything about your health.⁷

For intermittent leave, the certification also has to address why the on-again, off-again schedule is medically necessary and how long it’s likely to continue. Your employer can request a second opinion from a different provider at the employer’s expense if they doubt the first certification.⁶

ADA Accommodation Requests

If you request a reasonable accommodation — a modified schedule, different duties, assistive equipment — your employer can ask for documentation showing that you have a covered disability and that the accommodation is needed. The EEOC limits this to “the documentation that is needed to establish that a person has an ADA disability, and that the disability necessitates a reasonable accommodation.” Your complete medical records almost always contain unrelated information, so a demand for the whole file goes too far.⁸

When the disability and the need are obvious (a broken arm in a cast, for example), the employer may not need documentation at all.

Genuine Safety Concerns

An employer with objective evidence that a medical condition creates a real safety risk can require an examination or ask medical questions. Under the ADA, this applies when the employer reasonably believes the employee can’t safely perform essential job functions or poses a “direct threat” — a significant risk of substantial harm that can’t be reduced through reasonable accommodation.²

The determination has to be individualized and based on current medical knowledge, not stereotypes. An armed officer whose medication affects their ability to handle a firearm is a legitimate case. A desk worker with a chronic condition that has no bearing on the job is not.

Family Medical History Is Always Off-Limits

The Genetic Information Nondiscrimination Act draws a hard line around one category of health information: genetic data. An employer cannot request, require, or purchase genetic information about you or your family members. GINA defines “genetic information” broadly to include genetic test results, family medical history, whether any relative sought genetic counseling, and genetic information about a fetus or embryo.⁹

That matters for casual conversation. If your boss asks whether heart disease or cancer runs in your family, that question violates GINA, full stop. And if you volunteer during a sick-day call that a condition “runs in the family,” the employer has just received genetic information they weren’t allowed to acquire. When requesting medical documentation, employers should include safe-harbor language telling you and your provider not to include genetic information; the EEOC publishes model language for this.¹⁰

Doctor’s Notes for Longer Absences

Many employers require a doctor’s note for absences of three or more consecutive days. A proper note confirms that you were seen by a provider, that you were unable to work, and whether you have any restrictions when you return. It shouldn’t include a specific diagnosis unless a particular law (like FMLA certification for a serious health condition) calls for one.

Several states with paid sick leave laws restrict when employers can demand medical documentation at all. Some prohibit requiring a note as a condition of using accrued paid sick leave, though verification may be allowed in limited situations. The specifics vary, so check your state’s paid sick leave statute if there is one.

Whatever policy an employer uses, it has to be applied consistently. Requiring a note from one employee but not another with the same length of absence invites a discrimination claim. Union contracts can also change what’s allowed; collective bargaining agreements often set their own rules on medical verification, and those provisions can be more protective than the baseline law.

How Your Employer Has to Handle What They Do Learn

Any medical information your employer collects — from a doctor’s note, an FMLA certification, or a conversation about accommodation — has to be kept confidential and stored separately from your regular personnel file. That’s a specific ADA requirement, not a courtesy.¹

Access is tightly restricted. Supervisors and managers may be told about work restrictions or needed accommodations, but not your diagnosis. First aid and safety personnel may be informed if your condition could require emergency treatment. Government officials investigating ADA compliance can request relevant information. That’s it.

Your employer also cannot tell coworkers that you’re receiving a reasonable accommodation, because doing so effectively discloses that you have a disability.⁸ If a colleague asks about your different schedule or a special chair, the employer’s answer should address the arrangement without touching your health.

If Your Employer Crosses the Line

If your employer demands medical information they aren’t entitled to, retaliates against you for asserting your rights, or shares your health information with coworkers, you have recourse. The ADA prohibits employers from intimidating, threatening, or interfering with the exercise of ADA rights, including discouraging you from requesting an accommodation or filing a complaint.¹¹

To pursue a federal claim, you file a charge of discrimination with the EEOC. The window is 180 calendar days from the violation, extended to 300 days if your state or local government has its own agency enforcing employment discrimination laws — most states do.¹² You can start through the EEOC’s online public portal, at one of 53 field offices, or by mail.¹³ Once the deadline passes, the federal claim is gone regardless of how clear the violation was.

1
eCFR. 29 CFR 1630.14 – Medical Examinations and Inquiries Specifically Permitted
2
U.S. Equal Employment Opportunity Commission. Enforcement Guidance on Disability-Related Inquiries and Medical Examinations of Employees
3
U.S. Department of Labor. Fact Sheet 28O – Mental Health Conditions and the FMLA
4
U.S. Department of Health & Human Services. Employers and Health Information in the Workplace
5
U.S. Department of Health & Human Services. Am I a Covered Entity Under HIPAA
6
Office of the Law Revision Counsel. 29 USC 2613 – Certification
7
eCFR. 29 CFR 825.306 – Content of Medical Certification
8
U.S. Equal Employment Opportunity Commission. Enforcement Guidance on Reasonable Accommodation and Undue Hardship Under the ADA
9
eCFR. 29 CFR 1635.8 – Acquisition of Genetic Information
10
U.S. Equal Employment Opportunity Commission. Questions and Answers for Small Businesses – EEOC Final Rule on Title II of the Genetic Information Nondiscrimination Act
11
U.S. Equal Employment Opportunity Commission. Disability Discrimination and Employment Decisions
12
U.S. Equal Employment Opportunity Commission. Time Limits for Filing a Charge
13
U.S. Equal Employment Opportunity Commission. How to File a Charge of Employment Discrimination