An employer can deny FMLA leave, but only in a narrow set of situations that federal law spells out: the employee doesn’t meet the eligibility rules, the employer isn’t covered by the statute, the reason for leave doesn’t qualify, or the employee failed to give required notice or medical certification. Anything outside those grounds is interference, and the remedies against an employer that gets it wrong are substantial.
The Legitimate Grounds for Denial
The burden sits on the employer to point to a specific, lawful reason. There are essentially six.
You Aren’t an Eligible Employee
Three tests must all be met before you’re eligible. You must have worked for the employer at least 12 months (not necessarily consecutive, though breaks longer than seven years usually don’t count unless the gap was for USERRA-covered military service or a written agreement anticipated your return). You must have logged at least 1,250 hours in the 12 months right before the leave starts — roughly 24 hours a week, which is why many part-time workers fall short. And your worksite must have at least 50 employees within a 75-mile radius. Miss any one, and denial is lawful.1eCFR. 29 CFR 825.110 – Eligible Employee
Your Employer Isn’t Covered
Private-sector employers are covered only when they employ 50 or more workers for at least 20 workweeks in the current or preceding calendar year. Public agencies at every level, and public and private elementary and secondary schools, are covered regardless of size.2eCFR. 29 CFR 825.104 – Covered Employer A small private employer that doesn’t hit the threshold has no FMLA obligations at all, though a state family and medical leave law may still apply.
The Reason Doesn’t Qualify
FMLA leave is available only for specific reasons: bonding with a newborn, newly adopted, or newly placed foster child within a year of arrival; caring for a spouse, child, or parent with a serious health condition; your own serious health condition that keeps you from performing essential job functions; a qualifying exigency arising from a family member’s covered active duty; and up to 26 weeks of military caregiver leave for a covered service member’s spouse, child, parent, or next of kin.3U.S. Department of Labor. FMLA Frequently Asked Questions4eCFR. 29 CFR 825.127 – Leave To Care for a Covered Servicemember With a Serious Injury or Illness (Military Caregiver Leave)
A “serious health condition” is not every illness. A common cold, a routine dental visit, or a one-day stomach bug won’t qualify. The condition generally must involve an overnight hospital stay, incapacity of more than three consecutive days with ongoing treatment, a chronic condition needing periodic treatment, or pregnancy. Leave for a relative outside the covered list — an in-law or a sibling who isn’t acting in a parental role — can be denied on the same principle.5U.S. Department of Labor. Fact Sheet #28F – Reasons That Workers May Take Leave Under the Family and Medical Leave Act
You Didn’t Give Required Notice
For foreseeable leave — a scheduled surgery, an expected due date, planned treatment — you owe your employer at least 30 days’ advance notice. If you learn about the need less than 30 days out, notify the employer the same day or the next business day.6eCFR. 29 CFR 825.302 – Employee Notice Requirements for Foreseeable FMLA Leave You also have to follow your employer’s normal call-in procedures unless unusual circumstances make that impossible. Failing to give timely notice lets the employer delay or deny FMLA protection for the absence.3U.S. Department of Labor. FMLA Frequently Asked Questions
Medical Certification Is Missing or Incomplete
Your employer can require certification from your health care provider to back up the leave request, and you get at least 15 calendar days to submit it. Miss that deadline without a good explanation and the employer can deny FMLA protection until you provide a complete certification. Never submit one, and the leave simply isn’t protected.7U.S. Department of Labor. Fact Sheet #28G – Medical Certification Under the Family and Medical Leave Act Note the one carve-out: an employer cannot demand certification for bonding leave after birth, adoption, or foster placement.5U.S. Department of Labor. Fact Sheet #28F – Reasons That Workers May Take Leave Under the Family and Medical Leave Act
You’ve Used Up Your Entitlement
Once you’ve taken your full 12 workweeks — or 26 for military caregiver leave — within the applicable 12-month period, the employer owes you nothing further under the FMLA. Employers use different methods to calculate that 12-month window (calendar year, fixed year, anniversary year, or rolling lookback), and the math can change whether you have any weeks left, so confirm which method yours applies.
A Second-Job Policy You Violated
The FMLA itself doesn’t stop you from working a second job during leave. If your employer has a uniformly applied policy against outside employment — one enforced the same way for people on other types of leave — it can enforce that policy against you too, and can deny reinstatement on that basis. Without such a policy, penalizing you for working elsewhere generally isn’t allowed unless the leave itself was fraudulent.8eCFR. 29 CFR 825.216 – Limitations on an Employee’s Right to Reinstatement
Where Certification Fights Actually Happen
Certification is the most common pressure point in denials, so it’s worth knowing what the employer can and can’t do beyond the initial submission.
If your employer doubts the validity of your certification, it can require a second opinion from a different provider at its own expense. If that conflicts with yours, it can require a third opinion, also at its expense, and that third opinion is final and binding. Reasonable travel costs for the second and third appointments are the employer’s to cover.9eCFR. 29 CFR 825.307 – Authentication and Clarification of Medical Certification; Second and Third Opinions
Recertification is where employers often push. Generally the employer can request it no more often than every 30 days, and only when you’ve actually been absent. If the original certification says the condition will last longer than 30 days, the employer must wait until that minimum period ends. In every case, though, recertification can be sought at least every six months.10eCFR. 29 CFR 825.308 – Recertifications
The “Key Employee” Exception: Denial of Reinstatement, Not Leave
One narrow situation lets the employer deny job restoration even though the leave itself was proper. A “key employee” is a salaried, FMLA-eligible worker in the highest-paid 10 percent of all employees within 75 miles of the worksite.11eCFR. 29 CFR 825.217 – Key Employee, General Rule
Even then, the employer can refuse reinstatement only if returning the person to their position would cause “substantial and grievous economic injury.” That standard sits well above the ADA’s “undue hardship” bar; ordinary costs and minor inconveniences don’t get there. It contemplates something closer to a genuine threat to the operation.12eCFR. 29 CFR 825.218 – Substantial and Grievous Economic Injury
The employer also has to hit strict notice steps. It must inform the employee in writing at the time leave is requested that they qualify as a key employee, with an explanation of the potential consequences. If it later determines reinstatement would cause the required injury, it must send a second written notice by personal delivery or certified mail, explaining its reasoning and giving the employee a reasonable chance to return. Skip those steps and the right to deny restoration is lost.13eCFR. 29 CFR 825.219 – Rights of a Key Employee
Denials That Aren’t Called Denials
Federal law makes it illegal for an employer to interfere with, restrain, or deny the exercise of any FMLA right, and equally illegal to fire, demote, or otherwise discriminate against someone for requesting or taking leave, opposing an unlawful practice, or participating in an FMLA proceeding.14Office of the Law Revision Counsel. 29 USC 2615 – Prohibited Acts
One tactic worth watching: an employer cannot count FMLA-protected absences against you in a points-based attendance system. The Department of Labor treats that as using FMLA leave as a negative factor in employment decisions, which is retaliation.3U.S. Department of Labor. FMLA Frequently Asked Questions
What to Do If Your FMLA Request Is Wrongly Denied
You have two enforcement paths. You can file a complaint with the Wage and Hour Division of the U.S. Department of Labor — in person, by mail, or by phone at any local office — or you can file a private lawsuit in federal or state court.15U.S. Department of Labor. FMLA Advisor – Enforcement of the FMLA
For a private lawsuit, the deadline is two years from the employer’s last FMLA-violating act. If the violation was willful, it’s three years.15U.S. Department of Labor. FMLA Advisor – Enforcement of the FMLA
The remedies are worth the paperwork. An employer that violates the FMLA is liable for lost wages, salary, and benefits caused by the violation, plus interest. The court can add an equal amount in liquidated damages — effectively doubling recovery — unless the employer proves good faith. Reasonable attorney’s fees and costs are mandatory on top of that. Equitable relief such as reinstatement and promotion is also available.16Office of the Law Revision Counsel. 29 USC 2617 – Enforcement
A Boundary Worth Knowing: State Paid Leave
The FMLA guarantees only unpaid leave. Roughly a dozen states and the District of Columbia now run paid family and medical leave programs — Delaware, Maine, and Minnesota are among the most recent to start paying benefits — funded through small payroll contributions of under 0.5 percent up to around 1 percent of wages, depending on the state. Where a state program applies, its paid benefit generally runs concurrently with FMLA leave, not on top of it. Being denied under the FMLA doesn’t automatically mean you have no rights; check your state labor agency.