How Long Does FMLA Last? Duration, Eligibility, and Employer Duties
How long does FMLA last? For most qualifying reasons, an eligible employee is entitled to a total of 12 workweeks of leave during any 12-month period. Military caregiver leave runs longer, at 26 workweeks during a single 12-month period. Both numbers come from 29 U.S.C. 2612, and both set a federal floor that states are free to build on.
That answer is easy to state and hard to administer. The 12 workweeks are not tied to a calendar year unless the employer says so, the leave can be unpaid, and the entitlement only exists for employees who clear three separate tests. On the hiring side, a protected absence of that length lands as a temporary-coverage problem, which is the part Fabric touches: Fabric is an AI interview platform that screens candidates and runs Round 1 interviews.
This guide is written for the employer side, the people who have to administer the entitlement. Every figure below links to the statute or to the implementing regulations at 29 CFR Part 825, so you can check it against the primary source instead of a summary.
Table of contents
- How long does FMLA last under federal law?
- Who qualifies: eligible employees and covered employers
- What conditions qualify for FMLA leave?
- When does FMLA reset? The four ways to measure the 12-month period
- How long does intermittent FMLA last?
- What employers owe: notice and certification
- The federal floor is not the whole picture
- What protected absence means for hiring operations
- Related posts
- FAQ
How long does FMLA last under federal law?
The Family and Medical Leave Act creates two separate entitlements, which is why the duration has two answers. For birth and bonding, adoption or foster placement, a family member's serious health condition, the employee's own serious health condition, or a qualifying military exigency, an eligible employee gets a total of 12 workweeks of leave during any 12-month period. For caring for a covered servicemember with a serious injury or illness, the entitlement is 26 workweeks during a single 12-month period. The two do not stack. Where both apply inside that single 12-month period, the statute caps the combined total at 26 workweeks. The entitlement counts workweeks, which matters for part-time and variable-schedule staff, because a workweek means their normal workweek. The leave may be unpaid, and during it the employer must keep group health coverage in place on the terms that would have applied had the employee kept working.
| Entitlement | Duration | Period it is measured over |
|---|---|---|
| Birth, bonding, adoption, or foster placement | 12 workweeks | Any 12-month period, as the employer defines it. Expires 12 months after the birth or placement. |
| Employee's own serious health condition | 12 workweeks | Any 12-month period, as the employer defines it |
| Care for a spouse, child, or parent with a serious health condition | 12 workweeks | Any 12-month period, as the employer defines it |
| Qualifying exigency from covered active duty | 12 workweeks | Any 12-month period, as the employer defines it |
| Military caregiver leave for a covered servicemember | 26 workweeks | A single 12-month period. Combined cap of 26 workweeks with all other FMLA leave. |
Job protection is the other half of the entitlement, and it is what turns a duration into an operational constraint. Under 29 U.S.C. 2614, an employee returning from FMLA leave must be restored to the position held when the leave began, or to an equivalent position with equivalent benefits, pay, and other terms and conditions of employment.
Who qualifies: eligible employees and covered employers
FMLA eligibility is a two-sided test, and both sides have to pass. The employee has to be an eligible employee, and the business has to be a covered employer. Failing either one means the federal entitlement never arises, however sympathetic the circumstances. Both definitions sit in 29 U.S.C. 2611, and each contains a headcount threshold that trips up growing companies. A firm that crossed 50 employees last year can be covered this year. A satellite office of a large employer can sit outside the entitlement entirely if too few colleagues work within 75 miles of it. Neither fact is visible from the headline 12-week number, and no manager can assess either one from the org chart alone. This is also the layer where the wider labor law and workplace compliance stack starts to matter, because the same headcount thresholds recur across several federal statutes.
The eligible employee test
An employee must satisfy all three of the following:
- Employed by that employer for at least 12 months.
- At least 1,250 hours of service with that employer during the previous 12-month period.
- Employed at a worksite where the employer has 50 or more employees within 75 miles of it.
The 1,250 hours test is about hours actually worked, so it is the one part-time and reduced-schedule employees most often miss.
The covered employer test
A private employer is covered when it employs 50 or more employees for each working day during each of 20 or more calendar workweeks in the current or preceding calendar year. The statutory definition of employer also reaches public agencies, the Government Accountability Office, and the Library of Congress.
The "current or preceding calendar year" wording is the part employers misread. Dropping below 50 this year does not switch coverage off if last year's count qualified.
What conditions qualify for FMLA leave?
The qualifying reasons are a closed list, not a general hardship standard. An absence that does not fit one of them is not FMLA leave, however legitimate it is. Read the family definitions literally, because that is where well-meaning approvals go wrong. 29 CFR 825.122 defines a parent as a biological, adoptive, step, or foster father or mother, or an individual who stood in loco parentis to the employee, and states plainly that the term does not include parents in law. Siblings appear nowhere in the parent or son and daughter definitions, though brothers and sisters do count as next of kin for military caregiver leave. Employers can be more generous under their own policy, and many are, but the federal entitlement stops where the statute stops. Five reasons draw on the 12 workweeks.
- Birth of a child and care for the newborn.
- Placement of a child with the employee for adoption or foster care.
- Care for a spouse, son or daughter, or parent with a serious health condition.
- The employee's own serious health condition, where it makes them unable to perform the essential functions of the job.
- A qualifying exigency arising from a family member's covered active duty in the Armed Forces.
Military caregiver leave sits outside that list.
Leave for birth or placement has a deadline the other reasons do not. Under 29 CFR 825.120, an employee's entitlement to FMLA leave for a birth expires at the end of the 12-month period beginning on the date of the birth. Bonding leave cannot be banked for later.
When does FMLA reset? The four ways to measure the 12-month period
This is where most FMLA administration goes wrong, and it is the question the headline number hides. The statute grants 12 workweeks "during any 12-month period" without saying which 12 months. 29 CFR 825.200(b) resolves that by letting the employer choose one of four methods, applied uniformly to all employees. The same person, on the same date, with the same absence history, can have a different amount of leave available depending on which method their employer picked. If the employer never selects a method, the regulation applies the option that produces the most beneficial outcome for the employee, which is rarely the one the employer would have chosen. Changing methods later requires at least 60 days' notice to all employees, and the transition has to preserve the full 12 weeks under whichever method favors the employee.
| Method | How the entitlement behaves |
|---|---|
| The calendar year | A fresh 12 weeks on January 1 every year. Simplest to run, and the easiest to stack leave across. |
| Any fixed 12-month leave year | A fiscal year, a year set by state law, or a year starting on the employee's anniversary date. Resets on that fixed date. |
| Measured forward from first use | The 12-month clock starts the day the employee first takes FMLA leave, and a new clock starts at the next first use after it ends. |
| Rolling 12 months measured backward | On any given day, available leave is 12 weeks minus whatever was used in the preceding 12 months. Nothing resets on a fixed date. |
Why the choice changes the answer
Under a calendar-year method, an employee can take 12 weeks ending on December 31 and start a fresh 12 weeks on January 1, producing a lawful 24-week continuous absence. Under the rolling backward method that outcome cannot happen, because the autumn leave is still inside the look-back window in January.
Employers who want to limit stacked leave choose the rolling method. Employers who want the simplest payroll answer choose the calendar year. Both are lawful. What is not lawful is deciding case by case, and the choice has to be documented before you need it.
How long does intermittent FMLA last?
Intermittent FMLA leave is leave taken in separate blocks of time for a single qualifying reason, and a reduced leave schedule cuts the employee's usual hours per week or per day. Neither creates extra entitlement. Both draw on the same 12 workweeks, so an intermittent case lasts until the equivalent of 12 workweeks has been consumed, which can take many months of scattered absences. Under 29 CFR 825.205, only the amount of leave actually taken counts against the entitlement, and the employer must track it in an increment no larger than the smallest one it uses for any other leave type, capped at one hour. Access differs by reason. 29 CFR 825.202 makes intermittent leave for birth, bonding, or a new placement available only if the employer agrees, while for a serious health condition it is available where there is a medical need best accommodated that way.
That distinction drives workforce planning. Bonding leave can be negotiated into a predictable block, and a chronic condition cannot.
What employers owe: notice and certification
The FMLA runs on clocks, and most of them belong to the employer. Once an employee requests leave, or once the employer otherwise learns the absence may be FMLA-qualifying, 29 CFR 825.300 requires an eligibility notice within five business days, absent extenuating circumstances. A rights and responsibilities notice goes out with it, covering certification requirements, paid leave substitution, health premium arrangements, and benefit maintenance. When the employer has enough information to decide whether the absence qualifies, a designation notice follows, again within five business days. Every covered employer also has to post the general FMLA notice conspicuously on its premises. These deadlines are short, and they are easy to miss when the request arrives through a line manager who does not recognize it as an FMLA request, which is the most common failure point in practice.
What the employee owes
Employees carry two obligations of their own:
- At least 30 days' advance notice before FMLA leave begins where the need is foreseeable, under 29 CFR 825.302. Where 30 days is not practicable, because of a medical emergency or a change in circumstances, notice must be given as soon as practicable.
- Certification returned within 15 calendar days of the employer's request, unless that is not practicable.
Under 29 CFR 825.305, an employer should normally request certification when the employee gives notice or within five business days after. If the employee never furnishes a complete and sufficient certification, the employer may deny the leave.
Train line managers to route any mention of a serious health condition, a birth, or a family caregiving crisis straight to HR the same day. The five-business-day clock starts when the employer acquires knowledge, and a manager's knowledge is the employer's.
The federal floor is not the whole picture
FMLA sets a minimum, and several states go well past it. 29 U.S.C. 2651(b) says nothing in the Act supersedes any state or local law that provides greater family or medical leave rights, so the federal 12 weeks is a floor that a state is free to build on. California is the clearest illustration of how far that can go. The California Family Rights Act applies to employers with five or more employees, drops the 50-employees-within-75-miles test that federal law imposes, and still provides up to 12 weeks per year. An employee who fails the federal eligibility test can therefore be fully protected under state law. A multi-state employer that administers only the federal rule will get that wrong repeatedly, usually by denying leave that was actually owed. States commonly extend the floor in four directions.
- Lower employer headcount thresholds, so smaller businesses are covered.
- Wider definitions of family, reaching relatives the federal statute leaves out.
- Paid benefits funded through a state insurance program, in place of unpaid leave.
- Longer or separate entitlements for pregnancy, disability, and bonding.
This article is general information about how the federal entitlement works. It is not legal advice. Confirm your obligations with employment counsel in every jurisdiction where you employ people, because the state overlay changes the answer more often than the federal text does.
For the wider vocabulary around company-granted time off, including PTO, floating holidays, and general leave of absence mechanics, see our guide to leave of absence and PTO. For the other federal statutes that sit alongside FMLA in a US employment compliance stack, see FLSA, ADEA, ADA and USERRA explained.
What protected absence means for hiring operations
A 12-week protected absence is a hiring problem before it is a legal one. The role stays open, the work does not stop, and the job has to be there when the employee returns, so the usual answer is temporary coverage instead of a permanent hire. That compresses the timeline. A backfill needed in three weeks does not get a six-week screening process, and the recruiter covering it is often filling it on top of an existing requisition load. Fabric connects to LinkedIn Jobs, an existing ATS, or uploaded profiles, screens resumes, filters on eligibility parameters such as budget, location, and years of experience, and runs an AI-led Round 1 interview, then hands the recruiter or panel a shortlist to work from. It is a signal for your team to weigh, not an automatic decision. Fabric is built for Round 1 of roles where evaluation is objective, and for subjective roles a human interview is the better call.
Related posts
- Labor Law & Workplace Compliance: The Complete Guide
- FLSA, ADEA, ADA & USERRA: Key US Employment Laws Explained
- Leave of Absence, PTO & Floating Holidays Explained
- Bereavement Leave Policy: What to Include (Template)
- Common HR & Workplace Acronyms Glossary
FAQ
What is the longest you can take FMLA for?
The longest federal FMLA entitlement is 26 workweeks during a single 12-month period, and it applies only to military caregiver leave. For every other qualifying reason the maximum is 12 workweeks during a 12-month period.
What happens when my 12 weeks of FMLA is exhausted?
Once the 12 workweeks are used, the FMLA stops requiring the employer to hold the job open for further absence. Whether any additional leave is available then depends on employer policy, state law, or another statute, which is a question for employment counsel.
Does FMLA pay you 100%?
Federal FMLA leave pays nothing, because the statute permits the leave to be unpaid. An employee may elect, or an employer may require, that accrued paid vacation, personal, or medical leave be substituted for part of the unpaid period.
When does FMLA reset?
That depends entirely on which of the four permitted measurement methods the employer selected. Under the calendar year method the entitlement resets on January 1, while under the rolling backward method nothing resets on a fixed date and leave becomes available again only as older leave ages past the 12-month mark.
How long does intermittent FMLA last?
Intermittent leave draws on the same 12-workweek entitlement, so it continues until the equivalent of 12 workweeks has been used up. Only the leave actually taken counts against the entitlement, which is why an intermittent case can stay open for many months.
How long does FMLA last for maternity leave?
Leave for the birth of a child and to care for the newborn draws on the same 12 workweeks in a 12-month period as any other qualifying reason. That entitlement expires at the end of the 12-month period beginning on the date of the birth.
What conditions qualify for FMLA leave?
Federal FMLA covers birth and bonding, placement of a child for adoption or foster care, care for a spouse, child, or parent with a serious health condition, the employee's own serious health condition, and a qualifying exigency arising from a family member's covered active duty. Caring for a covered servicemember with a serious injury or illness is a separate and longer entitlement.