FMLA Leave for a Family Member’s Serious Health Condition

You can take FMLA leave for a family member’s serious health condition if you and your employer both qualify under the law: up to 12 workweeks of unpaid, job-protected leave in a 12-month period to care for a spouse, parent, or child. While you are out, your employer must keep your group health insurance on the same terms as if you were still working, and when you return, you are entitled to your old job or an equivalent one.¹

Which Family Members Are Covered

Caregiving leave under the FMLA is limited to three relationships: your spouse, your parent, or your son or daughter. The definitions are narrower than most people expect.²

A spouse is the person you are legally married to, with the marriage judged valid if it was valid where performed. That includes same-sex and common-law marriages recognized in any state. A parent is a biological, adoptive, step, or foster parent, or anyone who raised you in a parental role (the “in loco parentis” concept). A son or daughter is a biological, adopted, foster, or stepchild, a legal ward, or a child you raised in a parental role; the child must be under 18, or 18 and older with a physical or mental disability that prevents self-care.

Notice who is missing. Parents-in-law do not count. Siblings, grandparents, aunts, uncles, and cousins do not count either, unless that person actually raised you or you actually raised them. The in loco parentis relationship is the only bridge to relatives outside the three core categories.

What Counts as a Serious Health Condition

A serious health condition is an illness, injury, or impairment that involves either inpatient care or continuing treatment by a healthcare provider. Inpatient care means any overnight stay in a hospital, hospice, or residential medical facility. Continuing treatment is where most claims live, and the version people stumble over is the “incapacity plus treatment” test.³

Under that test, your family member must be unable to work, attend school, or handle normal daily activities for more than three consecutive full calendar days. They also must see a healthcare provider within seven days of the first day of incapacity, and either have at least one additional visit within 30 days or be placed on an ongoing course of treatment such as prescription medication or physical therapy.

Several other conditions qualify without the three-day threshold. Chronic conditions like epilepsy, asthma, or diabetes qualify if they cause recurring episodes and require at least two provider visits per year.⁴ Pregnancy and prenatal care are covered on their own. Permanent or long-term conditions like Alzheimer’s disease and terminal illness qualify even where treatment is no longer effective, because the person still needs supervision or care.

Substance abuse counts, but only when your family member is receiving treatment from a healthcare provider or through a referral from one. Absences tied to active use rather than treatment are not protected.⁵

What “Caring For” Actually Requires

You do not have to be providing hands-on medical treatment. The regulations define caregiving to include physical and psychological support, which covers a wide range of ordinary activities:⁶

Sitting with a family member during inpatient or home care to comfort and reassure them.
Helping with feeding, hygiene, or medication when they cannot manage on their own.
Staying with someone who cannot safely be left alone.
Driving to doctor visits, therapy, or treatment.
Attending care conferences, arranging a nursing-home transfer, or covering when the usual caregiver is unavailable.

You also do not have to be the only person who could help. Sharing the work with other family members or a paid caregiver does not disqualify you.

Whether You and Your Employer Qualify

Both sides of the employment relationship have to clear a threshold.

Private-sector employers are covered if they employed at least 50 people for at least 20 workweeks in the current or previous calendar year. Public agencies and public or private schools are covered regardless of size.

On your side, you have to meet three requirements:

You have worked for the employer for at least 12 months total. The months do not need to be consecutive.
You logged at least 1,250 hours in the 12 months immediately before your leave starts.
Your worksite has at least 50 employees within a 75-mile radius, measured by the shortest route on public roads.

The 75-mile rule catches people off guard. If you work at a small satellite office, you can work for a large company and still fall outside FMLA coverage, because the count includes only employees within that radius.

How Much Leave You Get and How It’s Measured

The entitlement is 12 workweeks in a 12-month period. Your employer picks one of four ways to define that 12-month window, and the choice matters:⁷

The calendar year, January 1 through December 31, with your 12 weeks resetting each January.
Any consistent fixed 12-month period, such as your hire anniversary or the company’s fiscal year.
A rolling period measured forward from the first day you take FMLA leave.
A rolling period measured backward, where each request triggers a look-back over the prior 12 months.

The backward-rolling method is the strictest for employees because it prevents stacking leave across two periods. If your employer has never formally selected a method, it must use whichever calculation gives you the most leave.

You do not have to take the 12 weeks in one block. When the condition requires it, you can take FMLA leave intermittently or on a reduced schedule: every other Friday for a child’s chemotherapy, twice-weekly early departures for a spouse’s physical therapy, and similar patterns. Your employer must track that time in the smallest increment it uses for any other kind of leave, and never in blocks larger than one hour. You cannot be charged more FMLA time than you actually use.⁸

How to Request Leave and Get It Approved

If you know ahead of time that leave is coming, such as for a scheduled surgery, give your employer at least 30 days’ notice. For a sudden need, give notice as soon as you reasonably can. You do not have to invoke the FMLA by name, but you do have to say enough for your employer to recognize the situation may qualify.

Once you give notice, your employer has five business days to send you a Notice of Eligibility and Rights & Responsibilities. You then generally have 15 calendar days to return a completed medical certification.⁹

The form is Department of Labor WH-380-F, “Certification of Health Care Provider for Family Member’s Serious Health Condition.” Your family member’s healthcare provider fills it out with the condition, its onset, expected duration, and the type of care you will be providing. If you will need intermittent leave, the form asks for estimates of frequency and duration.¹⁰

After the certification comes in, your employer has five business days to send a Designation Notice confirming whether the absence counts as FMLA leave. If the certification is incomplete or unclear, the employer must tell you in writing what is missing and give you seven calendar days to fix it. Failing to return a complete certification can lead to the request being denied.¹¹

Pay, Paid Time Off, and Health Insurance

FMLA leave itself is unpaid. You can choose to use accrued vacation, personal, or sick days so that the time is paid, and your employer can also require you to use that accrued paid leave concurrently, meaning the paid days count against your 12 weeks rather than running separately.¹²

One limit matters here. Your employer can only force you to use sick leave if its own policy would normally allow sick days in your situation. If the company’s sick-leave policy covers only the employee’s own illness, you cannot be required to burn sick days for a family member’s care. The Designation Notice should spell out whether substitution is required.

Some states run paid family leave programs that provide partial wage replacement during caregiving leave. Those programs are separate from the FMLA but often run concurrently, so the same weeks can satisfy both.

Your group health insurance continues on the same terms as if you were still working. If your employer normally pays 80 percent of the premium and you pay 20 percent, that split holds. If premiums change, you pay the new rate; no administrative fees can be added.¹³

During unpaid portions of your leave, you still owe your share of the premium. Your employer has to give you advance written notice of how and when to pay. Typical setups mirror your normal payroll deduction schedule, follow COBRA-style timelines, or use a prepayment plan agreed to before leave starts.

Returning to Your Job

When your leave ends, you have the right to return to the same position or an equivalent one with the same pay, benefits, and working conditions. “Equivalent” means genuinely comparable, not a demotion behind a similar title. Your employer cannot use the absence as cover for restructuring you out of a role or shifting you to a worse schedule, and this right holds even if someone filled in for you while you were gone.¹⁴

There is one narrow exception. A “key employee,” meaning a salaried worker in the highest-paid 10 percent of employees within 75 miles of the worksite, can be denied reinstatement if the employer shows that restoring them would cause substantial and grievous economic injury. Minor inconvenience does not meet that bar, and the employer has to give written notice both when leave begins and when it makes the determination, explain the reasoning, and give you a real chance to return before the denial takes effect. Skipping any of those steps forfeits the exception.¹⁵

Protection From Retaliation

Your employer cannot punish you for requesting or taking FMLA leave. That means no termination, no counting FMLA absences against you under a no-fault attendance policy, no using leave as a negative in promotion or hiring decisions, and no manipulating your hours to make you ineligible.¹⁶ The same protection covers anyone who files a complaint, gives information in an investigation, or testifies about FMLA rights, including coworkers who speak up for you.

If your rights are violated, you can file a complaint with the Department of Labor’s Wage and Hour Division, or file a private lawsuit. The lawsuit deadline is generally two years from the last violating action, or three years if the violation was willful.¹⁷

If Your Family Member Is a Servicemember

A separate FMLA provision applies when the person you are caring for is a current servicemember with a serious injury or illness. Military caregiver leave runs up to 26 workweeks in a single 12-month period, and the family definition widens to include the servicemember’s “next of kin,” the nearest blood relative, following a priority order (legal custodian, then siblings, grandparents, aunts and uncles, and first cousins) if the servicemember has not designated someone in writing. The 26 weeks is a combined cap covering all FMLA reasons in that window.¹⁸

1
eCFR. 29 CFR Part 825 – The Family and Medical Leave Act of 1993
2
eCFR. 29 CFR 825.122 – Definitions of Spouse, Parent, Son or Daughter
3
U.S. Department of Labor. Fact Sheet 28P – Taking Leave From Work When You or Your Family Member Has a Serious Health Condition Under the FMLA
4
U.S. Department of Labor. Family and Medical Leave Act Advisor – Serious Health Condition
5
eCFR. 29 CFR 825.119 – Leave for Treatment of Substance Abuse
6
eCFR. 29 CFR 825.124 – Needed to Care for a Family Member or Covered Servicemember
7
U.S. Department of Labor. Fact Sheet 28H – 12-Month Period Under the FMLA
8
eCFR. 29 CFR 825.205 – Increments of FMLA Leave for Intermittent or Reduced Schedule Leave
9
U.S. Department of Labor. Certification of Health Care Provider for Family Members Serious Health Condition
10
U.S. Department of Labor. FMLA Forms
11
eCFR. 29 CFR 825.305 – Certification, General Rule
12
eCFR. 29 CFR 825.207 – Substitution of Paid Leave
13
eCFR. 29 CFR 825.210 – Employee Payment of Group Health Benefit Premiums
14
eCFR. 29 CFR 825.214 – Employee Right to Reinstatement
15
U.S. Department of Labor. Family and Medical Leave Act Advisor – Key Employees
16
U.S. Department of Labor. Fact Sheet 77B – Protection for Individuals Under the FMLA
17
U.S. Department of Labor. Family and Medical Leave Act Advisor – Enforcement of the FMLA
18
U.S. Department of Labor. Fact Sheet 28M(a) – Military Caregiver Leave for a Current Servicemember Under the FMLA