FMLA Intermittent and Reduced-Schedule Leave Requirements

FMLA intermittent leave lets an eligible employee take the Family and Medical Leave Act’s 12 weeks of job-protected time in separate blocks — an afternoon for an infusion, a day during a flare-up, a week for a procedure — instead of all at once. Reduced-schedule leave is the close cousin: fewer hours per day or fewer days per week for a set stretch. Both carry the same protections as a single continuous absence, but they come with their own rules on when you can use them, how the time is counted, and what paperwork keeps the protection in place.

Are You Eligible in the First Place

Before anything else, confirm you’re covered. You qualify for FMLA if you’ve worked for your employer for at least 12 months, logged at least 1,250 hours in the 12 months before your leave starts, and work at a location where the employer has 50 or more employees within a 75-mile radius.¹ The 12 months don’t have to be consecutive. The 1,250 hours are strict — part-time workers and people returning from a long gap should do the math before assuming they’re in.

FMLA covers private employers with 50 or more employees, all public agencies, and public and private K–12 schools regardless of size. If fewer than 50 employees work within 75 miles of your worksite, FMLA does not apply to you even if the company is large nationwide.

When You Can Take Leave Intermittently

Whether you can break your leave into pieces depends on the reason for it.

Your Own or a Family Member’s Serious Health Condition

This is the most common use. A serious health condition is an illness, injury, or condition involving inpatient care or ongoing treatment by a healthcare provider. Chronic conditions like diabetes, epilepsy, asthma, or recurring episodes of a single underlying condition count as long as they require periodic treatment visits at least twice a year.² When intermittent leave is medically necessary for a serious health condition — yours, or that of a spouse, parent, or child — you do not need your employer’s permission to take it in pieces.

Bonding with a New Child

The rule flips for bonding leave after a birth, adoption, or foster placement. You can only take bonding leave intermittently or on a reduced schedule if your employer agrees. Without that agreement, bonding leave has to be one continuous block. The exception: if the parent or child has a serious health condition, intermittent leave for that medical need is available regardless of what the employer prefers.³

Military Family Situations

Qualifying exigency leave — things like attending military briefings, arranging childcare during a deployment, or handling legal and financial matters connected to a family member’s active duty — can be taken intermittently or on a reduced schedule. Military caregiver leave for a covered servicemember with a serious injury or illness gives you up to 26 workweeks in a 12-month period, also available intermittently when medically necessary.

How the 12 Weeks Get Counted in Hours

With one continuous block of leave, counting is simple. Intermittent leave turns the 12 weeks into a bank of hours. Multiply 12 by your usual weekly hours: a 40-hour schedule gives you 480 hours, a 50-hour schedule gives you 600.⁴

Every hour you miss for a qualifying reason comes out of that bank. The formula: divide the leave taken by the hours you would have worked that week without any leave. If you normally work 30 hours and worked 20 because of FMLA leave, you used one-third of a workweek. If your hours vary week to week, the employer can calculate your normal schedule by averaging the hours you were scheduled over the prior 12 months, including weeks when you used other leave.⁴

Mandatory overtime you miss because of your condition counts against your FMLA bank. If your required schedule is 48 hours and you can only manage 40, those 8 missed hours are FMLA leave. Voluntary overtime is different — if you simply choose not to pick up an extra shift, your employer cannot deduct that time from your balance.⁵

Your employer must track intermittent leave in the smallest increment it uses for any other leave — 15 minutes, 30 minutes, an hour. The hard cap is one hour; the increment can never be larger than that.⁴ If sick leave at your company runs in 15-minute blocks, FMLA has to as well. That rule keeps an employer from burning through your balance in artificially large chunks.

The Medical Certification That Holds It Together

Your employer will almost certainly ask for a medical certification supporting intermittent leave. It has to establish that a non-continuous schedule is medically necessary and estimate how often episodes or treatments will happen and how long each one will last. For planned treatment like chemotherapy or physical therapy, the certification should include expected dates and recovery periods. For unpredictable conditions like migraines or seizure disorders, it should estimate the frequency and duration of flare-ups.⁶

The Department of Labor publishes standardized forms — WH-380-E for your own condition and WH-380-F for a family member.⁷ Your employer doesn’t have to use those exact forms, but it can’t ask for more information than the federal forms cover. Complete, specific paperwork is the single best defense against problems later. A vague certification saying “patient needs intermittent leave as needed,” with no frequency or duration, invites delay and follow-up demands.

The 15-Day Deadline

Once your employer requests certification, you have 15 calendar days to return it. Genuine obstacles — a hospitalization, a doctor out of the country — can extend that. Miss the window without a good reason and your employer can deny FMLA protection for leave taken after the deadline until you produce the paperwork. Never submit it at all and the absence isn’t FMLA leave.⁸

If the employer has reason to doubt the certification, it can require a second opinion at its own expense, and a third opinion if the first two conflict. The third opinion is final and binding.⁹ Your health coverage and provisional FMLA protection continue while the process plays out.

Notice You Have to Give

Give at least 30 days’ advance notice when your need for leave is foreseeable — a scheduled surgery, standing chemotherapy, a planned procedure. When 30 days isn’t possible because the need comes up suddenly, notify your employer the same day you learn about it or the next business day.¹⁰

You also have to make a reasonable effort to schedule treatment so it doesn’t unduly disrupt operations. Your employer doesn’t pick your appointment times, but if you have flexibility, working around peak periods is the cooperation the law expects. Keep records of every notice — dates, times, who you spoke with. If a dispute comes up later, the employee with documentation is in a much stronger position.

Failing to follow your employer’s normal call-in or notice procedures without a valid reason can delay or defeat your leave.¹⁰ It’s one of the most common ways employees lose protection they were otherwise entitled to.

Notice runs both ways. Within five business days of learning your absence might qualify, the employer has to tell you whether you’re eligible. After it gets enough information to confirm the leave qualifies, it has another five business days to formally designate the leave as FMLA-protected and tell you.¹¹ You don’t have to say “FMLA” when you request the time off — you just have to give enough information for the employer to see it might qualify.

What Your Employer Can Do in Response

Employers aren’t stuck. The regulations give them several tools to manage intermittent absences while your rights stay intact.

Temporary Transfer

If your intermittent leave is foreseeable and tied to planned medical treatment, your employer can temporarily move you to a different position that better accommodates the absences. The alternative position must carry the same pay and benefits, though not necessarily the same duties. A common example: shifting someone from a production role where every absence shuts down a station to a desk role where coverage is easier. The employer can move you to a part-time role at the same hourly rate as long as you aren’t forced to take more leave than your condition requires.¹²

Recertification

Your employer can ask for updated certification to verify your condition and leave pattern still match the original paperwork. For ongoing conditions, recertification can be requested every six months in connection with an absence.¹³ More frequent recertification is allowed if your absences significantly exceed the frequency or duration on the original certification, if the employer receives information casting doubt on the reason, or if circumstances have changed.

Fitness-for-Duty

With continuous leave, employers often require a fitness-for-duty note before you return. Intermittent leave works differently. Your employer cannot demand a doctor’s note every time you come back from a short absence. The exception is when reasonable safety concerns exist — a genuine risk that your condition could cause harm to you or others on the job. In that case, the employer can require fitness-for-duty certification up to once every 30 days, and it has to tell you about the requirement when it designates the leave as FMLA. You cannot be fired while waiting for the certification to come back.¹⁴

Pay and Health Insurance While You’re on Leave

FMLA leave is unpaid. That surprises people. The law protects your job, not your paycheck. Either you or your employer can require accrued paid leave — vacation, sick time, personal days — to run alongside FMLA leave. When paid leave is substituted, those hours still count against your 12-week entitlement, but at least you’re getting a check. If the paid leave policy has its own procedural rules, follow them. Failing to do so can cost you the pay, though you still keep FMLA protection.¹⁵

If you’re already collecting disability payments or workers’ compensation, neither side can require substitution of paid leave, because that time isn’t technically unpaid. You and your employer can agree to have paid leave supplement those benefits if state law allows it.¹⁵

Your group health insurance continues on the same terms as if you were still working. Your share of the premium doesn’t change, but if premiums go up during your leave, you pay the new rate like everyone else. When your leave is unpaid, the employer has to give you advance written notice explaining how you’ll pay your premium share. The employer cannot require prepayment or charge you more than employees on other kinds of unpaid leave.¹⁶

Getting Your Job Back and Protection from Retaliation

When your leave ends, your employer must restore you to your original position or one that’s virtually identical in pay, benefits, and working conditions.¹ That applies whether you took 12 weeks in a row or spread the time out over months. If you were temporarily transferred during the intermittent period, you return to your original position when the intermittent leave is no longer needed.

Your employer cannot retaliate against you for using FMLA — no firing, demoting, disciplining, or cutting hours because you exercised your rights.¹⁷ The prohibition also reaches subtler interference: discouraging you from applying, counting FMLA absences against you in an attendance policy, or treating your leave as a negative factor in a performance review. If you believe your employer has interfered with your rights or retaliated, you can file a complaint with the Department of Labor’s Wage and Hour Division or bring a private lawsuit. The deadline is generally two years from the violation, three if it was willful.

1
U.S. Department of Labor. Family and Medical Leave (FMLA)
2
eCFR. 29 CFR 825.102 – Definitions
3
U.S. Department of Labor. Fact Sheet 28Q – Taking Leave from Work for the Birth, Placement, and Bonding with a Child under the FMLA
4
U.S. Department of Labor. Fact Sheet 28I – Counting Leave Use under the Family and Medical Leave Act
5
eCFR. 29 CFR 825.205 – Increments of FMLA Leave for Intermittent or Reduced Schedule Leave
6
eCFR. 29 CFR 825.306 – Content of Medical Certification
7
U.S. Department of Labor. FMLA Forms
8
eCFR. 29 CFR 825.313 – Failure to Provide Certification
9
eCFR. 29 CFR 825.307 – Second and Third Opinions
10
eCFR. 29 CFR 825.302 – Employee Notice Requirements for Foreseeable FMLA Leave
11
eCFR. 29 CFR 825.300 – Employer Notice Requirements
12
eCFR. 29 CFR 825.204 – Transfer of an Employee to an Alternative Position
13
eCFR. 29 CFR 825.308 – Recertifications
14
eCFR. 29 CFR 825.312 – Fitness-for-Duty Certification
15
eCFR. 29 CFR 825.207 – Substitution of Paid Leave
16
U.S. Department of Labor. Family and Medical Leave Act Advisor – Employee Payment of Group Health Benefit Premiums
17
U.S. Department of Labor. Fact Sheet 77B – Protection for Individuals under the FMLA