FMLA serious health condition.

What the regulation says

The statute leaves the phrase "serious health condition" to the Department of Labor, and 29 CFR 825.113(a) defines it as an illness, injury, impairment, or physical or mental condition that involves either inpatient care or continuing treatment by a health care provider. Nothing in the text turns on a diagnosis. A broken bone, depression, cancer and asthma are all potentially covered, and a bad cold is ordinarily not, because the definition is about what happens to the person: how long they cannot function, and what treatment follows.

Two supporting definitions matter in every path. Incapacity means being unable to work, attend school or perform other regular daily activities because of the condition, its treatment or recovery (825.113(b)). Treatment includes examinations to find out whether a serious health condition exists, but not routine physical, eye or dental examinations (825.113(c)). A regimen of continuing treatment can be a course of prescription medication or therapy with special equipment, but over-the-counter medicine, bed rest, fluids and exercise that can start without seeing a provider are not enough by themselves.

The six paths at a glance

How the three-day test is counted

The most common path is the one in 825.115(a). The period of incapacity has to be more than three consecutive, full calendar days. Three days is not enough; the fourth full day is what tips it. After that, the rule asks for treatment, and it has become stricter in wording than many people remember: treatment by a health care provider means an in-person visit, and the first (or only) in-person visit has to take place within seven days of the first day of incapacity (825.115(a)(3)). Telehealth alone does not satisfy that visit requirement in the regulation text we read.

Then one of two things must follow. Either the person is treated two or more times within 30 days of the first day of incapacity (by a provider, a nurse under the provider’s direct supervision, or a therapist acting on orders or referral), unless extenuating circumstances exist; or there is at least one treatment visit that results in a regimen of continuing treatment under the provider’s supervision. The provider decides whether more visits or a regimen are needed in the 30-day window (825.115(a)(4)). Extenuating circumstances are things outside the employee’s control that stop a planned follow-up, such as a provider with no appointments available in that window (825.115(a)(5)).

Worked example

An employee catches influenza and is unable to work Monday through Friday, five days. She sees her doctor on Tuesday, two days after onset, and is prescribed an antiviral course. Incapacity is 5 days, which is more than 3 consecutive full calendar days. The first visit is within 7 days. One visit resulted in a regimen of continuing treatment (a prescription course), so the path in 825.115(a)(2) is met even without a second visit. Compare a second employee with the same flu who stays home three days with fluids and aspirin and never sees a provider: incapacity is not more than 3 days, there is no in-person treatment, and the condition is among the ordinary ailments the regulation says do not qualify (825.113(d)).

Conditions that qualify without a long absence

Pregnancy and chronic conditions work differently. For both, absences due to incapacity qualify even if the employee does not see a provider during the absence and even if the absence is not longer than three days (825.115(f)). An employee with asthma can take FMLA leave for an attack, or because the provider advised staying home when pollen counts are high. Severe morning sickness is the regulation’s own example for pregnancy. The chronic path still requires periodic provider visits, defined as at least twice a year.

What this page cannot decide

Whether a condition is serious does not decide whether a particular employee gets leave. The employer must be covered, the employee must be eligible (12 months, 1,250 hours, 50 employees within 75 miles), and the employer can ask for a medical certification. The related tools on this page cover eligibility and balance. This calculator applies your numbers to the text of 825.113 to 825.115 and cannot weigh provider documentation, state leave laws or a collective bargaining agreement.

Sources

Sources opened and read November 2, 2026.

• eCFR: 29 CFR 825.113 Serious health condition (current through October 29, 2026) (read November 2, 2026)
• eCFR: 29 CFR 825.114 Inpatient care (current through October 29, 2026) (read November 2, 2026)
• eCFR: 29 CFR 825.115 Continuing treatment (current through October 29, 2026) (read November 2, 2026)
• U.S. Department of Labor: FMLA forms page, WH-380-E and WH-380-F certification forms (Internet Archive copy) (read November 2, 2026)