What Medical Conditions Disqualify You From Jury Duty?

No fixed list of medical conditions automatically disqualifies you from jury duty under federal law. A judge can excuse you when a health problem would make serving an “undue hardship,” and what matters is whether your condition actually prevents you from sitting through a trial, following testimony, and deliberating, not the name of your diagnosis.¹ You document that functional limitation with a doctor’s letter, submit it with your juror questionnaire, and the court decides.

The Standard Courts Actually Apply

Federal jury law asks two separate questions. The qualification statute looks at whether a prospective juror has a “physical or mental infirmity impairing his capacity to serve.”² The excuse statute asks whether service would cause “undue hardship or extreme inconvenience.”¹ Neither statute names any condition.

What courts care about is function. Jury service requires sustained attention for roughly six hours a day across potentially several consecutive days. If your condition prevents you from doing that reliably, you have a strong basis for excusal. If it makes service harder but still workable with help, the court will likely offer an accommodation instead.

Conditions That Commonly Qualify

Certain categories of health problems come up repeatedly in excuse requests. None is guaranteed, but each represents the kind of functional limitation courts regularly accept.

Chronic Pain and Mobility Problems

Severe back injuries, advanced arthritis, sciatica, and similar conditions that prevent sitting for extended periods fit squarely within the undue-hardship standard. The same applies to conditions that require frequent restroom breaks or scheduled medication administration that would repeatedly interrupt proceedings.

Hearing and Vision Loss

Significant impairment can qualify, but courts are required to consider accommodations first. Federal courts must ensure that a disqualifying physical condition is one “that cannot be addressed with an accommodation.”³ If an assistive listening device, large-print exhibits, or an interpreter would let you follow the trial, the court may deny excusal and provide the tool instead. Where the impairment is too severe for accommodation to help, excusal is appropriate.

Mental Health and Cognitive Conditions

Severe anxiety disorders, PTSD, dementia, and cognitive impairments from traumatic brain injury are valid grounds for excusal when they interfere with concentration and rational deliberation. A doctor’s letter describing how the condition affects sustained attention and decision-making is the most effective approach.

Active Treatment for Serious Illness

Courts routinely excuse jurors in the middle of chemotherapy, radiation, dialysis, or similar treatment regimens. The side effects and the frequency of medical appointments make reliable attendance nearly impossible. These situations often result in a postponement rather than permanent excusal, on the expectation that you may be able to serve later.

Episodic and Unpredictable Conditions

Epilepsy, severe migraines, Crohn’s disease, and certain autoimmune disorders flare without warning. Courts evaluate these based on frequency and severity. The doctor’s letter should describe how often episodes occur and how disabling they are, rather than just naming the diagnosis.

Accommodations Are Not the Same as Excusal

Many prospective jurors with disabilities assume they are automatically disqualified when what they actually need is an accommodation the court is already prepared to provide. Federal courts are required to make reasonable accommodations before resorting to excusal.³ Common ones include wheelchair-accessible courtrooms, assistive listening systems, frequent breaks for medical needs, and permission to stand or move during proceedings.

If one of these adjustments would let you serve, contact the court’s ADA coordinator or jury office before your service date and ask. A medical excuse is for cases where no accommodation would make service feasible.

What the Doctor’s Letter Should Say

A letter from a licensed healthcare provider is the standard evidence courts expect. Some summons packets include a specific medical excuse form. If yours does, use it. Otherwise, a letter on the doctor’s letterhead works.

The letter should cover four things:

The doctor’s credentials, practice, and contact information so the court can verify the letter.
A general description of the condition. Courts do not require a specific diagnosis, so phrasing like “chronic neurological condition” or “mobility impairment” is enough.
How the condition affects jury service, in concrete functional terms. “Unable to sit for more than 30 minutes without significant pain” or “experiences unpredictable episodes of disorientation lasting several hours” is the kind of detail that works. Vague statements like “unable to serve” are the most common reason letters get rejected.
Whether the condition is temporary or permanent, so the court knows whether to postpone or remove you from future pools.

One detail catches people off guard. If you currently hold a job, the court may want to know why you can work but cannot serve. A good letter answers that in advance, pointing to differences like the ability to take breaks at will, work from home, or avoid courtroom-specific stressors.

How and When to Submit

The jury summons includes a questionnaire that must be completed and returned. There is a section for requesting an excuse. Check the medical hardship option and include the doctor’s letter.

Most courts accept the paperwork by mail using the address and deadline printed on the summons. Many federal courts also offer an online juror portal where you can submit the questionnaire and upload a scanned letter. Keep copies of everything.

Submit as early as possible. Waiting until the last minute leaves no room for the court to request additional documentation, which can turn into a denial simply because the deadline passed.

What the Court Can Decide

A jury office staffer or judge reviews your documentation. Each federal district runs its own jury selection plan, so procedures vary.³ The response usually falls into one of four categories:

Temporary excuse. You are released from the current summons but remain in the jury pool and may be summoned again later.
Permanent excuse. For serious long-term impairments, the court may remove your name from future jury lists.
Postponement. Common during active treatment, with service deferred to a specific later date.
Denial. The court may reject your request if the documentation is incomplete, if the described limitation does not meet the undue-hardship threshold, or if an accommodation could address it. You are still expected to appear.

If Your Request Is Denied

There is no formal appeal. Federal excuses are granted at the court’s discretion and “cannot be reviewed or appealed to Congress or any other entity.”³ Practically, you can still do two things. Call the jury office and ask what was missing, then resubmit a stronger letter addressing the specific concern. You can also appear on your service date and explain your situation to the judge, who has authority to excuse you on the spot.

If You Are Over 70

Many federal district courts allow people over age 70 to opt out of jury service automatically upon request, without a doctor’s note.³ This is a policy individual courts adopt in their jury selection plans rather than a blanket federal rule. State courts set their own thresholds, often 65, 70, or 75. If you are in that range, check whether an age-based excuse is available before going through medical documentation.

What Happens If You Ignore the Summons

Skipping the paperwork is a mistake even when your medical reason is legitimate. A judge can order you to appear and explain yourself, and failure to show good cause carries a fine of up to $1,000, up to three days in jail, community service, or a combination.¹ The same penalties apply to anyone who lies on the juror qualification form.² If a medical condition genuinely prevents you from serving, the excusal process is built to accommodate that. File the paperwork.

1
Office of the Law Revision Counsel. United States Code Title 28 – 1866
2
Office of the Law Revision Counsel. United States Code Title 28 – 1864
3
United States Courts. Juror Qualifications, Exemptions and Excuses