The Family and Medical Leave Act (FMLA) rules and regulations give eligible employees up to 12 weeks of unpaid, job-protected leave in a 12-month period for qualifying medical and family reasons, with up to 26 weeks available for caring for a covered servicemember. The law spells out which employers must comply, which workers qualify, what counts as a serious health condition, how to request leave, and what your job and health insurance look like when you return. The rules also draw hard lines: silence on paid wages, a narrow family-member definition, and specific deadlines that can cost you the protection if you miss them.
Which Employers and Employees Are Covered
Private-sector companies must comply if they employ 50 or more workers for at least 20 workweeks in the current or preceding calendar year. Everyone on the payroll counts toward that 50, whether full-time, part-time, or on leave. Public agencies at every level of government and public and private elementary and secondary schools are covered no matter how many people they employ.1eCFR. 29 CFR 825.102 – Definitions
Working for a covered employer isn’t enough on its own. To be an eligible employee, you must meet three requirements:
- You’ve worked for the employer for at least 12 months. The months don’t have to be consecutive, but a break of seven years or more generally wipes out the earlier period unless the gap was for military service or covered by a written agreement to rehire.2eCFR. 29 CFR 825.110 – Eligible Employee
- You’ve actually worked at least 1,250 hours in the 12 months before leave starts. Paid vacation and sick time don’t count toward that number.3eCFR. 29 CFR 825.110 – Eligible Employee
- Your employer has at least 50 employees within a 75-mile radius of your worksite.3eCFR. 29 CFR 825.110 – Eligible Employee
That last requirement catches people off guard at companies with scattered offices. A business can have 500 workers nationwide but only 30 near you and 15 at the next-closest site. Combined headcount under 50 within 75 miles means no FMLA, even though the employer itself is covered.
Qualifying Reasons for Leave
If you’re eligible, FMLA covers six categories:
- The birth of your child and time to bond with and care for the newborn.4eCFR. 29 CFR 825.112 – Qualifying Reasons for Leave, General Rule
- The placement of a child with you for adoption or foster care.
- Caring for your spouse, child, or parent with a serious health condition.
- Your own serious health condition, when it prevents you from performing your job.
- A qualifying exigency arising from a spouse’s, child’s, or parent’s active-duty deployment or call to active duty.5eCFR. 29 CFR 825.126 – Leave Because of a Qualifying Exigency
- Caring for a covered servicemember with a serious injury or illness, available to the servicemember’s spouse, child, parent, or next of kin.6U.S. Department of Labor. Fact Sheet 28M: Using FMLA Leave Because of a Family Member’s Military Service
Read the family-member list carefully. For caregiving leave, it’s limited to your spouse, child, or parent. Siblings, grandparents, and in-laws are not covered under federal FMLA, even if you’re the primary caregiver. Bonding leave after a birth or placement is available equally to mothers and fathers.
What Counts as a Serious Health Condition
A serious health condition means an illness, injury, or physical or mental condition that involves either inpatient care (an overnight hospital stay) or continuing treatment by a healthcare provider.7eCFR. 29 CFR 825.113 – Serious Health Condition Continuing treatment reaches chronic conditions like epilepsy or asthma that flare up periodically, long-term conditions like Alzheimer’s, and conditions requiring multiple treatments such as chemotherapy or physical therapy.
The regulations exclude common ailments that don’t involve complications. The flu, earaches, upset stomachs, minor ulcers, and routine dental problems generally don’t qualify unless they lead to inpatient care or complications requiring ongoing treatment. Mental illness and allergies can qualify, but only if they meet the same treatment thresholds. Cosmetic treatments also fall outside FMLA unless complications develop.7eCFR. 29 CFR 825.113 – Serious Health Condition
One rule surprises people: over-the-counter remedies and bed rest alone don’t count as “continuing treatment.” A regimen of prescription medication or therapy requiring special equipment qualifies. A doctor telling you to rest and drink fluids does not.7eCFR. 29 CFR 825.113 – Serious Health Condition
How Much Leave, and How You Can Use It
Most qualifying reasons entitle you to 12 workweeks of leave during a 12-month period.8eCFR. 29 CFR 825.200 – Amount of Leave Military caregiver leave is the exception, providing up to 26 workweeks in a single 12-month period.9Government Publishing Office. 29 CFR 825.200 – Amount of Leave Employers can define the 12-month period in different ways (a calendar year, a fiscal year, or a rolling window measured forward or backward from your leave), but they must apply the chosen method consistently to all employees.
Leave doesn’t have to be taken all at once. Intermittent leave lets you take time off in separate blocks, and a reduced schedule cuts your weekly or daily hours for a stretch.10eCFR. 29 CFR 825.202 – Intermittent Leave or Leave on a Reduced Leave Schedule For medical reasons, these arrangements are available whenever the care is better handled in shorter or sporadic absences, such as chemotherapy appointments, flare-ups from a chronic condition, or a course of physical therapy. Bonding leave after a birth or adoption is different: your employer has to agree before you can take it intermittently. Otherwise, they can require it in one continuous block.
Employers must track intermittent leave in increments no larger than one hour, and no larger than the smallest increment used for any other kind of leave.11eCFR. 29 CFR 825.205 – Increments of FMLA Leave for Intermittent or Reduced Schedule Leave If you left two hours early for an appointment, only two hours come off your balance.
Paid Leave Running Alongside FMLA
FMLA leave is unpaid by default. You can choose to use accrued vacation, sick days, or PTO during FMLA leave so the two run concurrently, and your employer can require you to do so.12eCFR. 29 CFR 825.207 – Substitution of Paid Leave Either way, the paid leave and FMLA leave count against each other. Using three weeks of vacation doesn’t extend your 12-week entitlement to 15 weeks.
The rule shifts when you’re already receiving compensation elsewhere. If you’re collecting workers’ compensation or benefits from a state paid family leave program, neither you nor your employer can force accrued paid leave to be layered on top. You can mutually agree to use paid leave to top up partial state benefits where state law allows. Once those outside payments end and the leave becomes truly unpaid, the standard substitution rules apply again.12eCFR. 29 CFR 825.207 – Substitution of Paid Leave
How to Request Leave
When you can see the need coming, such as a scheduled surgery or an expected due date, give your employer at least 30 days’ advance notice.13eCFR. 29 CFR 825.302 – Employee Notice Requirements for Foreseeable FMLA Leave For unexpected leave, notify your employer as soon as reasonably possible, generally following the company’s normal call-in procedures.14eCFR. 29 CFR 825.303 – Employee Notice Requirements for Unforeseeable FMLA Leave A family member can give notice for you if you can’t do it yourself.
You don’t have to name FMLA the first time you request leave. You do have to give enough information for your employer to see that the absence might qualify, such as mentioning a hospitalization, a chronic condition flare-up, or the birth of a child. Calling in “sick” with nothing more isn’t enough. For repeat requests tied to the same condition, you must specifically reference the qualifying reason or your need for FMLA leave.14eCFR. 29 CFR 825.303 – Employee Notice Requirements for Unforeseeable FMLA Leave
Medical Certification
Your employer can require a medical certification from your healthcare provider. The employer should request certification when you first give notice or within five business days after, and you then have 15 calendar days to return the completed form.15eCFR. 29 CFR 825.305 – Certification, General Rule The Department of Labor publishes optional forms most employers rely on.16U.S. Department of Labor. FMLA: Forms
Certification must include the provider’s contact information, the approximate start date and expected duration of the condition, and enough medical facts to show why the leave is needed. Intermittent leave certifications must also estimate how often episodes will occur and how long each will last.17eCFR. 29 CFR 825.306 – Content of Medical Certification
If the employer finds the certification incomplete or vague, they must tell you in writing what’s missing and give you seven calendar days to fix it. Failing to return a certification at all lets the employer deny FMLA protection for the absence.15eCFR. 29 CFR 825.305 – Certification, General Rule An employer that doubts the certification can require a second opinion at its expense, and if the two disagree, a third opinion (chosen jointly) is final and binding.18U.S. Department of Labor. Medical Certification – Second and Third Opinions While opinions are pending, you’re provisionally entitled to FMLA benefits, including continued health coverage.
What Your Employer Has to Send You
Within five business days of learning about your need for leave, your employer must give you a written eligibility and rights and responsibilities notice covering whether you qualify and what you owe during leave, including premium payment arrangements.19eCFR. 29 CFR 825.300 – Employer Notice Requirements Once the employer has enough information to decide whether the leave qualifies, typically after receiving your certification, they must issue a designation notice within five business days confirming that the time counts as FMLA leave and how much will be deducted.
Your Job and Benefits During and After Leave
Reinstatement
When you return, you’re entitled to your same job or an equivalent position. Equivalent means virtually identical in pay, benefits, working conditions, duties, and responsibilities, with the same shift or equivalent schedule and a worksite that doesn’t add significant commute time.20eCFR. 29 CFR 825.215 – Equivalent Position You also get any unconditional pay raises that happened while you were out, such as cost-of-living increases. Bonuses tied to hitting a specific goal like perfect attendance can be withheld if the FMLA absence caused you to miss it.
Health Insurance
Your employer must maintain your group health coverage during FMLA leave under the same terms as if you were still working, which means the employer keeps paying its share.21eCFR. 29 CFR 825.209 – Maintenance of Employee Benefits You remain responsible for your share of the premiums. If leave is unpaid, the employer must tell you in advance how and when to pay.
Coverage doesn’t disappear the moment a payment is late. Your employer must give at least 15 days’ written notice that coverage will be dropped, naming the date it will end if payment isn’t received. The grace period before cancellation can run up to 30 days from the missed payment date. Even if coverage does lapse for nonpayment during leave, it must be restored when you return, with no new waiting periods, enrollment forms, or medical exams.22eCFR. 29 CFR 825.212 – Employee Responsibility to Pay Health Plan Premium Payments
The Key Employee Exception
One narrow exception to the reinstatement guarantee applies to salaried employees in the highest-paid 10 percent of the workforce within 75 miles of the worksite. Being classified as a key employee doesn’t stop you from taking FMLA leave or keeping your health insurance during it. It does let the employer deny reinstatement to your former position if restoring you would cause “substantial and grievous economic injury” to operations.23eCFR. 29 CFR 825.218 – Substantial and Grievous Economic Injury That standard sits above ordinary business inconvenience and is rarely met.
Protection Against Retaliation
FMLA prohibits interference with the right to leave, discrimination against employees who use it, and retaliation against anyone who participates in an FMLA investigation or proceeding.24eCFR. 29 CFR 825.220 – Protection for Employees Who Request Leave or Otherwise Assert FMLA Rights Interference reaches further than outright denial. Discouraging you from using leave, counting FMLA absences under a no-fault attendance policy, using your leave request as a negative factor in promotion or discipline, or shuffling workers between sites to hold the local headcount below 50 all violate the law. The most common retaliation claims involve terminations shortly after return from leave or passed-over promotions the employee had been in line for.
How to Enforce Your Rights
If your employer breaks the rules, you can file a complaint with the Department of Labor’s Wage and Hour Division at 1-866-487-9243 (Monday through Friday, 8:00 a.m. to 4:30 p.m. local time) or through your local Wage and Hour office.25USAGov. The Family and Medical Leave Act You can also file a private lawsuit in federal or state court. Available remedies include back pay and lost benefits, other actual monetary losses (such as the cost of paying for care yourself), interest, and an equal amount in liquidated damages on top of that. The court must also award reasonable attorney’s fees and costs. A court can reduce or eliminate liquidated damages if the employer proves the violation was in good faith and it reasonably believed it was complying with the law.26Office of the Law Revision Counsel. 29 USC 2617 – Enforcement
The deadline to sue is two years from the date of the last violation, extended to three years for willful violations. Miss those, and you lose the right to sue.
State Paid Family Leave Programs
FMLA itself pays nothing. A growing number of states have created their own paid family and medical leave programs that run alongside it. As of 2025, 13 states and the District of Columbia have mandatory paid family leave, mostly funded through payroll contributions. New York operates through mandatory private insurance, while California, New Jersey, and Washington use a social insurance model. An additional ten states have adopted voluntary systems that let employers offer paid leave through private insurance markets.
Where a state program applies, you’ll typically file a separate claim with the state agency while your FMLA leave runs at the same time, and the state benefit replaces a portion of your wages. When you’re already drawing state paid leave, your employer generally cannot force you to burn through accrued PTO on top of those payments.12eCFR. 29 CFR 825.207 – Substitution of Paid Leave Some state programs also cover employers too small to fall under FMLA, extending protection to workers who wouldn’t otherwise have any.