Intermittent FMLA Call-In Procedures: Setting Rules Without Violating the Law

6/1/2026

Intermittent FMLA leave is the hardest leave to administer and the easiest to mismanage. An employee with a chronic condition may be out three times this month and none the next, with no advance warning. Operations needs predictability. The law gives you some — but far less than most call-in policies assume.

Quick answer: Employers may require employees to comply with their usual and customary notice and procedural requirements for requesting leave, and may deny or delay FMLA protection when an employee fails to comply without unusual circumstances. But the policy must be the same policy that applies to non-FMLA absences, it must be communicated in advance, and the "unusual circumstances" exception is real and frequently applies.

The Governing Rule

The operative regulation is 29 C.F.R. § 825.303(c), which addresses unforeseeable leave — the category most intermittent absences fall into:

"When the need for leave is not foreseeable, an employee must comply with the employer's usual and customary notice and procedural requirements for requesting leave, absent unusual circumstances… If an employee does not comply with the employer's usual notice and procedural requirements, and no unusual circumstances justify the failure to comply, FMLA-protected leave may be delayed or denied."

Three phrases carry all the weight:

Phrase	What It Means in Practice
"Usual and customary"	You cannot impose a stricter call-in rule on FMLA absences than you impose on ordinary absences. A special FMLA-only hotline with tighter deadlines is a red flag.
"Absent unusual circumstances"	Medical emergencies, hospitalization, incapacity, and inaccessible phone systems all excuse non-compliance. This exception is broader than employers expect.
"May be delayed or denied"	The remedy is to delay or deny FMLA protection for that absence — not to terminate for FMLA abuse. Those are different actions with different exposure.

What a Defensible Call-In Policy Looks Like

1. It applies identically to FMLA and non-FMLA absences

If your general attendance policy says "notify your supervisor before the start of shift," your FMLA call-in requirement is the same. If you want to require notice one hour before shift for intermittent FMLA, you must require it for everyone.

2. It specifies who to call, how, and by when

Vague policies fail in both directions. Name the recipient (supervisor, an absence line, or the leave administrator), the acceptable methods, and the deadline. Then honor every method you listed — if the policy permits a text message, you cannot later discipline an employee for texting.

3. It is communicated in writing before it is enforced

Include the call-in requirement in the Rights and Responsibilities Notice and in the leave approval letter, not only in the handbook. Employers routinely lose enforcement disputes because the specific procedure existed only in an unread handbook section.

4. It asks only what you are entitled to ask

The employee must provide enough information for you to determine that the absence is covered by an already-approved FMLA leave — typically a reference to the qualifying condition and the expected duration. They do not have to re-justify the leave, provide a new diagnosis, or explain symptoms in detail each time. Requiring a fresh medical explanation for every intermittent absence is itself a common interference theory.

5. It defines the consequence clearly and proportionately

State that non-compliant absences may not be FMLA-protected and may be treated under the attendance policy. Do not state that non-compliance is grounds for termination for FMLA abuse.

Sample Language You Can Adapt

The following is a starting framework, not legal advice — have counsel review it against your existing attendance policy and applicable state law:

"When you need to use approved intermittent FMLA leave, you must notify [designated contact] using [approved methods] as soon as practicable and, when possible, at least [X] before the start of your scheduled shift — the same notice required for any unscheduled absence. Your notification must identify that the absence is for your approved FMLA leave and state your expected return. If unusual circumstances prevent you from providing notice in this manner, notify us as soon as you are able and explain the circumstances. Absences that do not comply with these requirements, and are not excused by unusual circumstances, may not be counted as FMLA-protected and may be addressed under the attendance policy."

The Six Most Common Enforcement Mistakes

• A stricter standard for FMLA than for other absences. The most frequent and most easily proven violation.
• Requiring the employee to speak to a live person. Defensible only if that is the rule for all absences and the line is reliably staffed. Otherwise it functions as an obstacle.
• Demanding new medical information at each call-in. Recertification has its own rules and its own frequency limits; the call-in is not a recertification opportunity.
• Ignoring "unusual circumstances" evidence. If an employee was hospitalized, incapacitated, or physically unable to call, the failure is excused. Document your assessment either way.
• Counting non-compliant absences as attendance points while also treating them as FMLA. Pick one. You cannot deny FMLA protection and simultaneously count the absence against the entitlement.
• Enforcing the policy inconsistently across supervisors. Comparator evidence is the fastest route to a retaliation finding.

Recertification and Pattern Absences: What You Can Actually Do

Call-in enforcement is a blunt instrument. When an intermittent leave pattern raises legitimate concern — every Friday, every Monday after a holiday — the lawful tools are different and more effective:

6. Request recertification. Generally permitted no more often than every 30 days in connection with an absence, and always when the circumstances described in the original certification change significantly, when you receive information casting doubt on the stated reason, or when the employee requests an extension.
7. Ask the provider to address the pattern. When requesting recertification, you may provide the provider with a record of the employee's absence pattern and ask whether the serious health condition and need for leave are consistent with it.
8. Require the certification to state frequency and duration. An approved intermittent leave should state expected episodes per month and days per episode. Absences materially exceeding that estimate support a recertification request.
9. Enforce the underlying attendance policy for non-FMLA absences. Absences outside the approved leave remain subject to your normal rules.

For the full framework, see our guides to managing intermittent FMLA leave, tracking intermittent leave effectively, and FMLA medical certifications.

Tracking: The Operational Half of the Problem

Intermittent leave has to be tracked in the smallest increment your payroll system uses to track other leave — and never in increments larger than one hour. Employers who round a two-hour absence up to a full day are over-deducting from the entitlement, which is itself interference.

Three tracking practices that prevent disputes:

• Record the date, time in and out, and the reason category for every intermittent absence in a leave-specific system, not the general attendance log.
• Reconcile the running FMLA balance monthly and share it with the employee. Surprise exhaustion at week 12 is a preventable conflict.
• Keep intermittent leave records in the confidential medical file, separate from the personnel file.

Frequently Asked Questions

Can I require two hours' notice before a shift for intermittent FMLA?

Only if you require the same for all unscheduled absences and you have communicated it. Even then, unusual circumstances excuse non-compliance.

Can I deny FMLA protection for a late call-in?

You may delay or deny protection for that specific absence if the employee failed to follow a properly communicated, usual-and-customary procedure and no unusual circumstances apply. Document the analysis before you act.

What counts as "unusual circumstances"?

Emergency hospitalization, incapacity that prevents calling, a phone system outage, or an unexpected medical emergency involving the family member being cared for. The exception is applied generously by courts, so evaluate it in good faith.

Can I require the employee to call every day of a multi-day absence?

Only if that is your rule for all absences. Daily call-in requirements applied only to FMLA users are a classic interference fact pattern.

How much information can I require at call-in?

Enough to confirm the absence falls within the approved leave and to estimate duration. Not a new diagnosis, symptom description, or medical justification.

Train the People Who Take the Call

Intermittent FMLA fails at the supervisor level, not the HR level. The person answering the phone at 6:00 a.m. decides whether your policy is applied lawfully — and they are usually the least trained person in the chain.

The FMLA Training & Certification Program covers intermittent leave, call-in procedures, certification, and recertification in operational detail. For teams managing intermittent leave alongside ADA accommodations and workers' compensation, the Advanced Issues in FMLA, ADA, and Leave Management Certificate Program addresses the overlap directly.

👉 See the Integrated Leave Management Training Program →

Additional resources: FMLA Rules for Employers | Eligible Types of FMLA Leave | Glossary of Leave Management Terms