How to Call Off Work Using FMLA: Notice, Certification, and Return

To call off work using FMLA, tell your employer as soon as you know you need the time — 30 days ahead if the leave is foreseeable, as soon as practicable if it isn’t — follow your company’s normal call-in procedure, and return the medical certification your employer sends you within 15 calendar days. Do those three things and the law protects your job for up to 12 workweeks. Skip a step and your employer can legally deny FMLA protection for the absence.¹

Confirm You Actually Qualify

Before you call off, make sure FMLA covers you. Three conditions have to be met at once: you’ve worked for your employer at least 12 months, you’ve logged at least 1,250 hours in those 12 months, and your employer has at least 50 employees within a 75-mile radius of your worksite (measured by surface roads, not a straight line).²³

The reason has to qualify too. FMLA covers the birth or placement of a child, care for a spouse, child, or parent with a serious health condition, your own serious health condition that keeps you from doing your job, and qualifying exigencies tied to a family member’s covered active duty.⁴ A separate provision gives you up to 26 workweeks in a 12-month period to care for a covered servicemember with a serious injury or illness.⁵

A “serious health condition” is a narrower category than most people assume. It means either an overnight stay in a hospital or continuing treatment by a health care provider, which includes prescription medication or therapy requiring special equipment. Over-the-counter remedies, bed rest, and other self-care you can start without seeing a provider don’t count. Cosmetic procedures don’t count either unless complications develop or you’re admitted overnight.⁶

Calling Off for Foreseeable Leave

If you know in advance that you’ll need time off — scheduled surgery, planned treatment, an expected birth, a known adoption or foster placement date — you have to give your employer at least 30 days’ notice. If the situation shifts and 30 days isn’t possible, give notice as soon as you can.¹

Your notice needs three pieces: the reason for the leave, when you expect it to start, and roughly how long you’ll be out. You don’t have to say “FMLA” or cite the statute. What matters is that your employer has enough information to recognize the absence as potentially qualifying. “I’m having back surgery on March 15 and expect to be out about two weeks” is enough.¹

One exception matters here. If you’ve already taken FMLA leave for the same condition and you’re requesting more time for it, you do have to specifically reference the qualifying reason or your need for FMLA leave. A vague call-off after you’ve already been out for the same issue won’t trigger protection.¹

Contact your supervisor, HR, or both, using whatever process your company normally uses for leave requests. Put it in writing when you can. An email creates a timestamped record if a dispute comes up later. If you give notice verbally, note the date, time, and who you spoke with.

Calling Off in an Emergency

When the need for leave isn’t something you could have planned for, notify your employer as soon as it’s practical given the circumstances. In most cases that means the same day you learn about the need, or the next business day at the latest.⁷

If you’re too sick or incapacitated to make the call yourself, a spouse, family member, or another responsible person can do it for you. If you’re in the emergency room with your child, no one expects you to step away to phone your manager. Once the situation stabilizes and you have access to a phone, you’re expected to call promptly.⁷

Follow Your Company’s Call-In Procedures

Even in an emergency, you generally have to follow your company’s standard call-in procedures. If the policy says call a specific number or notify a particular person, do that. Skipping the procedure without a good reason gives your employer grounds to delay or deny FMLA protection for the absence.⁷

The regulations do recognize “unusual circumstances” that excuse missing the usual steps. A required call-in line that goes unanswered with a full voicemail. Emergency medical treatment that keeps you from reaching a phone until you’re stabilized. The standard is reasonableness.⁸

Return the Medical Certification on Time

Shortly after you give notice, your employer will almost certainly ask for medical certification. The request should come in writing, usually when you give notice or within five business days after.⁹

The Department of Labor publishes optional forms — WH-380-E for your own condition and WH-380-F when you’re caring for a family member. Your employer may use these or a similar form of their own, but they can’t demand information beyond what the regulations permit. Your provider fills out details like when the condition began, its expected duration, and whether intermittent leave is medically necessary.¹⁰

You have 15 calendar days from your employer’s request to return the completed certification. If that’s genuinely not possible despite good-faith efforts, the deadline can extend, but you have to explain why. Failing to provide a complete certification on time can result in your leave being denied FMLA protection entirely.⁹ This is the step where people most often lose coverage. Treat the 15-day window as a hard deadline and get the form to your doctor immediately.

If your certification is incomplete or insufficient, your employer has to tell you in writing exactly what’s missing and give you at least seven calendar days to fix it.¹¹ If they doubt the certification, they can require a second opinion from a different provider at their expense, and a third opinion if the first two conflict; the third is final.¹²

Calling In for Intermittent Absences

FMLA leave doesn’t have to be one continuous block. You can take it in smaller pieces — a few hours for a medical appointment, two days a week during chemotherapy, or unpredictable absences from a chronic condition like migraines. But each individual absence under an approved intermittent leave plan still requires you to follow your company’s normal call-in procedure.¹³

When you know treatment dates in advance, you’re expected to schedule them to minimize disruption where possible, subject to your provider’s approval. If dates shift or were initially unknown, notify your employer as soon as practicable.¹ The same rule about unusual circumstances applies: if a medical emergency keeps you from reaching the required call-in number, that’s understood.

Employers can request recertification, but not more often than every 30 days in most cases, and only when you actually take an absence. Regardless of what the certification says, they can request recertification every six months in connection with an absence.¹⁴

What You’ll Get Paid and How Your Benefits Work

FMLA leave is unpaid. The law protects your job and your health insurance; it does not require your employer to keep paying your salary. Your employer can require you to use accrued vacation, sick, or PTO concurrently with FMLA, and you can choose to do this yourself. When paid leave runs alongside FMLA, you get a paycheck and the time still counts against your 12-week entitlement.¹⁵ Some states run their own paid family and medical leave programs that provide partial wage replacement while your federal FMLA runs at the same time.

Your employer must maintain your group health insurance on the same terms as if you were still working. You still owe your share of the premium. On paid portions it comes out of your paycheck; during unpaid portions your employer arranges an alternative payment method.¹⁶ If you don’t return to work after your leave ends, your employer can recover the premiums it paid on your behalf during the unpaid portion, unless a continuing serious health condition or other circumstance beyond your control kept you out.¹⁷

Coming Back to Work

When your FMLA leave ends, you have the right to return to the same position or an equivalent one with equivalent pay, benefits, and working conditions, even if your employer filled your role or restructured while you were out.¹⁸

If your leave was for your own serious health condition, your employer can require a fitness-for-duty certification before you return, but only if the requirement is applied uniformly and you were told about it in the designation notice at the start of your leave. You pay for that exam, and your employer can delay your return until you submit it, so schedule it before your last day off.¹⁹

If Calling Off Gets Used Against You

Federal law makes it illegal for your employer to interfere with, restrain, or deny your FMLA rights, and equally illegal to fire you or discriminate against you for requesting or using FMLA leave.²⁰ Retaliation often looks subtler than outright termination: a sudden drop in performance ratings after you return, a demotion framed as a reorganization, being quietly passed over for assignments.

Keep a paper trail from the start. Save the email or written notice you sent, the certification you submitted, your employer’s written responses, and any changes in how you’re treated after taking leave. If you believe your employer is retaliating, you can file a complaint with the Department of Labor’s Wage and Hour Division or pursue a private lawsuit.

1
eCFR. 29 CFR 825.302 – Employee Notice Requirements for Foreseeable FMLA Leave
2
U.S. Department of Labor. Fact Sheet #28: The Family and Medical Leave Act
3
eCFR. 29 CFR 825.111 – Determining Whether 50 Employees Are Employed Within 75 Miles
4
Office of the Law Revision Counsel. 29 USC 2612 – Leave Requirement
5
U.S. Department of Labor. Fact Sheet #28M(a): Military Caregiver Leave for a Current Servicemember
6
eCFR. 29 CFR 825.113 – Serious Health Condition
7
eCFR. 29 CFR 825.303 – Employee Notice Requirements for Unforeseeable FMLA Leave
8
U.S. Department of Labor. Family and Medical Leave Act Advisor – Complying with Employer Policy
9
eCFR. 29 CFR 825.305 – Certification, General Rule
10
eCFR. 29 CFR 825.306 – Content of Medical Certification
11
eCFR. 29 CFR 825.300 – Employer Notice Requirements
12
eCFR. 29 CFR 825.307 – Second and Third Opinions
13
U.S. Department of Labor. FMLA Frequently Asked Questions
14
eCFR. 29 CFR 825.308 – Recertifications
15
eCFR. 29 CFR 825.207 – Substitution of Paid Leave
16
eCFR. 29 CFR 825.209 – Maintenance of Employee Benefits
17
eCFR. 29 CFR 825.213 – Employer Recovery of Benefit Costs
18
eCFR. 29 CFR 825.214 – Employee Right to Reinstatement
19
eCFR. 29 CFR 825.312 – Fitness-for-Duty Certification
20
Office of the Law Revision Counsel. 29 USC 2615 – Prohibited Acts