An employer can deny intermittent FMLA leave, but only for specific reasons the statute allows. If a healthcare provider certifies that intermittent leave is medically necessary for a serious health condition, the employer generally cannot refuse it, no matter how inconvenient the schedule. Denial is lawful when eligibility rules aren’t met, the reason for leave doesn’t qualify, certification or notice requirements are ignored, or the leave is for newborn or newly placed child bonding and the employer hasn’t agreed to an intermittent schedule. Eligible employees get up to 12 workweeks of job-protected leave per year, and intermittent time counts against that total.1Office of the Law Revision Counsel. 29 USC 2612 – Leave Requirement
The Grounds an Employer Can Actually Use
A lawful denial of intermittent FMLA leave falls into one of a few buckets. Either you or your employer doesn’t meet the eligibility criteria. The reason for leave isn’t one FMLA covers. You didn’t provide a sufficient medical certification within the time allowed. You didn’t give proper notice. Or the leave is bonding time with a new child and your employer hasn’t agreed to break it up. Anything outside those categories — a supervisor who thinks your absences are excessive, a manager who finds the schedule disruptive, a company policy that treats intermittent leave as optional — is not a legal basis for denial.
Eligibility Gaps That Justify Denial
The simplest reason an FMLA request fails is that the basic coverage rules aren’t satisfied. FMLA applies to private-sector employers with 50 or more employees within a 75-mile radius of the worksite.2eCFR. 29 CFR 825.111 – Determining Whether 50 Employees Are Employed Within 75 Miles A smaller employer has no FMLA obligation at all.
As the employee, you must meet three separate criteria:
- At least 12 months of employment with the employer, not necessarily consecutive, though work more than seven years before your most recent hire date generally doesn’t count.
- At least 1,250 hours worked in the 12 months immediately before your leave begins.
- A worksite where the employer has 50 or more employees within 75 miles.
Missing any one of these is enough for the employer to deny leave.3eCFR. 29 CFR Part 825 – The Family and Medical Leave Act of 1993 – Section: 825.110 Eligible Employee An employer that finds you ineligible must tell you in writing within five business days of your request and give at least one reason.4eCFR. 29 CFR 825.300 – Employer Notice Requirements
Reasons That Qualify and the One Place Employer Consent Matters
Even for eligible employees, an employer can deny leave when the underlying reason isn’t covered. The way intermittent scheduling works also depends on which qualifying reason applies.
Serious Health Conditions
A serious health condition means inpatient care or continuing treatment by a healthcare provider, and it covers chronic conditions like epilepsy, diabetes, or asthma that produce episodic flare-ups, as well as conditions requiring regular appointments or ongoing prescription medication.5eCFR. 29 CFR 825.113 – Serious Health Condition When the certification confirms that intermittent leave is medically necessary, the statute says leave “may be taken intermittently or on a reduced leave schedule when medically necessary.”1Office of the Law Revision Counsel. 29 USC 2612 – Leave Requirement No employer consent is needed. Treating intermittent leave as optional when the medical documentation supports it is a common route to an interference claim.
The same rule applies whether the serious health condition is yours or that of a spouse, child, or parent you’re caring for.
Military Family Qualifying Exigencies
If your spouse, child, or parent is on covered active duty or has been called up, intermittent leave for qualifying exigencies is available: short-notice deployment issues, military events, arranging childcare, financial and legal matters, counseling, and time with a servicemember on rest and recuperation leave (up to five days per instance).6U.S. Office of Personnel Management. Family and Medical Leave Qualifying Exigency Leave Employer consent isn’t required for the intermittent schedule.1Office of the Law Revision Counsel. 29 USC 2612 – Leave Requirement
Bonding With a New Child
Bonding leave is the exception where employer consent controls. To take intermittent leave to bond with a newborn, newly adopted, or newly placed foster child, you need your employer’s agreement. Without it, the employer can lawfully require you to use bonding leave in a single continuous block, and the leave must be completed within 12 months of the birth or placement.7U.S. Department of Labor. FMLA Frequently Asked Questions
One important carveout: if the newborn or newly placed child has a serious health condition, intermittent leave to care for that child does not require employer permission. A parent spending several hours a day at the hospital during a NICU stay is taking leave for a serious health condition, not bonding, and the employer cannot block the intermittent schedule.8U.S. Department of Labor. Fact Sheet 28Q – Taking Leave from Work for the Birth, Placement, and Bonding with a Child Under the FMLA
Certification Failures
Medical certification is one of the most common flashpoints in intermittent leave disputes. Getting it wrong gives the employer a legitimate basis to deny or delay leave.
Your employer can require a certification from your healthcare provider, and you have 15 calendar days to produce it after the request.9eCFR. 29 CFR 825.307 – Authentication and Clarification of Medical Certification The certification must confirm the serious health condition, give the start date and expected duration, and specifically state that intermittent leave is medically necessary, including the anticipated frequency and duration of each episode. A certification that simply says “employee has migraines” without addressing the intermittent schedule can be rejected.
If the certification is incomplete or vague, though, the employer cannot just refuse it and close the file. It must tell you in writing what’s missing and give at least seven calendar days to fix the problem.7U.S. Department of Labor. FMLA Frequently Asked Questions Only after that cure window passes with a still-insufficient certification can the employer lawfully deny leave. If your employer hands back a deficient form, treat those seven days as a hard deadline.
An employer that doubts the certification can require a second opinion from a different healthcare provider, at the employer’s expense. If the first and second opinions conflict, the employer can request a third opinion from a provider both sides agree on, and that third opinion is final. An employer that won’t negotiate the third provider in good faith is stuck with the original certification; an employee who won’t cooperate is stuck with the second opinion.9eCFR. 29 CFR 825.307 – Authentication and Clarification of Medical Certification
For ongoing intermittent leave, the employer can ask for updated documentation. As a rule, that’s no more often than every 30 days and only when you’ve actually been absent. If the certification says your condition will last longer than 30 days, the employer has to wait until that duration expires. Every six months, though, the employer can request recertification regardless of the stated duration.10eCFR. 29 CFR 825.308 – Recertifications The employer can also seek earlier recertification if you ask to extend beyond what was originally certified, if the frequency or severity of your absences changes significantly, or if the employer receives information that casts real doubt on the reason for the absences.
Notice Failures
A valid medical reason isn’t enough on its own. Poor notice can cost you FMLA protection.
When leave is foreseeable — planned treatments, scheduled appointments — you must give at least 30 days’ advance notice when possible. If 30 days isn’t feasible, notice has to come as soon as you learn of the need.11eCFR. 29 CFR 825.302 – Employee Notice Requirements for Foreseeable FMLA Leave
For unexpected flare-ups, notice must come “as soon as practicable,” which in practice means following your employer’s standard call-in procedures for any other absence. If you’re in the emergency room, no one expects you to step away to make the call, but once the immediate crisis passes you have to give notice promptly. An employer can delay or deny leave if you skip its normal call-in procedures without a good reason.12eCFR. 29 CFR 825.303 – Employee Notice Requirements for Unforeseeable FMLA Leave
What Employers Can Do Instead of Denying
Some employees think their leave has been denied when what’s actually happened is a lawful workaround. If your intermittent schedule is genuinely disruptive, your employer can temporarily transfer you to a different position that better accommodates recurring absences. Pay and benefits must stay equivalent, though the duties can differ.13eCFR. 29 CFR 825.202 – Intermittent Leave or Reduced Leave Schedule Your employer can also propose an alternative schedule and, with your agreement, use that instead. What it cannot do is use disruption as a cover for denying medically necessary leave.
Fitness-for-duty certifications work differently for intermittent leave than for continuous leave. An employer cannot require one after every absence. It can require one no more than every 30 days, and only when there are reasonable safety concerns — a genuine belief that your return poses a significant risk of harm to you or others.14eCFR. 29 CFR 825.312 – Fitness-for-Duty Certification The employer must tell you at the time it designates your leave if periodic certifications will be required. And you cannot be fired while waiting for one to arrive.
If Your Employer Isn’t Covered
Employers with fewer than 50 employees aren’t subject to FMLA, but that doesn’t necessarily leave you without options. The Americans with Disabilities Act covers employers with 15 or more employees and requires reasonable accommodations for workers with disabilities, which can include intermittent unpaid leave.15U.S. Equal Employment Opportunity Commission. Employer-Provided Leave and the Americans with Disabilities Act
The ADA framework doesn’t set a fixed 12-week entitlement. Instead, the employer must engage in an interactive process and provide leave unless doing so would cause “undue hardship.” If a workplace attendance policy caps unscheduled absences at four days per year and a disability causes periodic absences beyond that, the employer must consider granting an exception rather than disciplining you.15U.S. Equal Employment Opportunity Commission. Employer-Provided Leave and the Americans with Disabilities Act ADA protections can also extend beyond an exhausted FMLA entitlement at a larger employer.
What To Do If Your Leave Is Wrongfully Denied
Federal law prohibits employers from interfering with FMLA rights or retaliating against employees who use them. Firing, demoting, or otherwise punishing you for requesting or taking FMLA leave violates the statute.16Office of the Law Revision Counsel. 29 USC 2615 – Prohibited Acts
You have two paths. File a complaint with the Department of Labor’s Wage and Hour Division at 1-866-487-9243; complaints are confidential, and the agency decides whether to open an investigation.17U.S. Department of Labor. How to File a Complaint Or file a private lawsuit in federal or state court. The deadline is two years from the last violation, or three years if the violation was willful.18U.S. Department of Labor. Family and Medical Leave Act Advisor – Enforcement of the FMLA
Remedies include lost wages and benefits, interest, liquidated damages that can double your lost-pay award, reinstatement or promotion, and reasonable attorney’s fees.19Office of the Law Revision Counsel. 29 USC 2617 – Enforcement An employer that acted in good faith with reasonable grounds to believe it wasn’t violating the law may avoid the liquidated damages doubler, but the lost wages remain in play. Document every denial, every conversation, and every written exchange with your employer. These cases usually turn on the paper trail.