How Long Does It Take for FMLA to Be Approved?

Getting FMLA approved typically takes three to five weeks from the day you notify your employer. Federal regulations build that window from three deadlines stacked back to back: your employer has five business days to confirm your eligibility, you have 15 calendar days to return a medical certification, and your employer then has another five business days to issue a final designation. When nothing goes sideways, the whole thing wraps up in roughly 25 business days. Disputes over the medical certification, an incomplete form, or a second-opinion request can push it longer.

The Clock Starts When You Notify Your Employer

Nothing happens until your employer knows you need leave. For a planned event like a scheduled surgery, the birth of a child, or a pre-arranged treatment, you owe at least 30 days’ notice.¹ That lead time lets the approval process run in parallel with your employer arranging coverage, so a 30-day notice on a foreseeable leave often means approval is done before your first day out.

When something is not foreseeable, like a sudden hospitalization, you need to notify your employer as soon as reasonably possible, usually through whatever call-in procedure your workplace already uses. You do not have to say “FMLA” by name, but share enough for your employer to recognize the situation may qualify: what happened, how long you expect to be out, and whether ongoing treatment is likely.

Before that clock has any legal effect, you need to actually be eligible. That means 12 months of employment with the company (they do not need to be consecutive), at least 1,250 hours worked in the 12 months before leave begins, and a worksite where your employer has 50 or more employees within 75 road miles.²³ If you clear those bars, you are entitled to up to 12 weeks of unpaid, job-protected leave in a year, and your employer must keep your group health benefits going while you are out.⁴

Eligibility Notice: Five Business Days

Once your employer learns you may need FMLA leave, the first regulatory deadline kicks in. Within five business days, your employer must give you a written eligibility notice, often on the Department of Labor’s Form WH-381.² The notice tells you whether you meet the eligibility requirements and, if you do, what your rights and responsibilities are going forward.

An eligible-employee notice will identify which 12-month tracking method your employer uses, whether you must submit a medical certification, and whether the employer will require you to use accrued paid leave (vacation, sick time, PTO) concurrently with FMLA. If you are found ineligible, the notice must give a specific reason, such as falling short on hours or length of service.²

Medical Certification: 15 Calendar Days

This is where most of the wait happens. If your employer requests a medical certification (and most do), you have 15 calendar days from the request to submit a completed form signed by your healthcare provider, typically the Department of Labor’s WH-380.⁵ The form documents your condition, its expected duration, and whether it keeps you from working. Getting on your doctor’s schedule fast matters here. A slow appointment is the single most common reason approval drags past five weeks.

If the form comes back incomplete or vague, your employer cannot just deny the leave. It has to tell you in writing exactly what is missing or unclear, and you get at least seven calendar days to fix it and resubmit.⁵ If the corrected form is still inadequate, the employer may deny. A form you never return at all is treated as a failure to certify, with no cure period.

Your employer can contact your provider to authenticate the form or clarify handwriting, but only with your permission, and it cannot use that contact to fish for additional medical detail.

The same 15-day window applies if you are asking for intermittent leave for a chronic condition or ongoing treatment. The certification just has to explain why the condition requires scattered absences rather than one continuous block, and vague language on that point is a common trigger for pushback.⁶

What Can Stretch the Timeline

Even a clean certification can trigger a second look. If your employer has a genuine reason to doubt the medical opinion, it can require you to see a different doctor for a second opinion. The employer picks the provider (someone it does not regularly use) and pays for the visit and reasonable travel.⁷

If that second opinion contradicts your doctor, the process can escalate to a third provider, chosen jointly by you and your employer, whose finding is binding. If the employer will not negotiate the third provider in good faith, your original certification controls; if you are the one refusing to cooperate, the second opinion controls.⁷ Second and third opinions can add several weeks to approval, so a thorough original certification is worth the effort.

Designation Notice: Five Business Days

Once your employer has the information it needs, it has five business days to issue a designation notice, typically on Form WH-382, telling you whether your leave is officially designated as FMLA.⁸ This is the decision you have been waiting for.

An approval spells out how much leave will count against your 12-week annual allotment, whether any of it will be paid through substituted vacation or sick time, and whether you will need a fitness-for-duty certification before returning to work.⁸ A denial must explain why.

If your employer misses the deadline or fails to designate your leave while you are already out, it can still designate retroactively, but only if the delay did not harm you. You and your employer can also agree to retroactive designation at any time.⁹

If Your Employer Blows the Deadlines

The five-business-day windows are not suggestions. An employer that misses them or improperly denies leave can be treated as interfering with your FMLA rights, potentially owing lost wages, lost benefits, other monetary losses, and liquidated damages equal to those losses.¹⁰

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 phone, or by mail at any local office. Or you can file a private lawsuit in federal or state court. For the lawsuit route, you generally have two years from the violation to file, three if the violation was willful.¹¹

1
eCFR. 29 CFR 825.302 – Employee Notice Requirements for Foreseeable FMLA Leave
2
U.S. Department of Labor. Notice of Eligibility and Rights and Responsibilities (Form WH-381)
3
eCFR. 29 CFR 825.111 – Determining Whether 50 Employees Are Employed Within 75 Miles
4
U.S. Department of Labor. Family and Medical Leave (FMLA)
5
eCFR. 29 CFR 825.305 – Certification, General Rule
6
eCFR. 29 CFR 825.202 – Intermittent Leave or Reduced Leave Schedule
7
eCFR. 29 CFR 825.307 – Authentication and Clarification of Medical Certification; Second and Third Opinions
8
U.S. Department of Labor. Designation Notice Under the Family and Medical Leave Act (Form WH-382)
9
eCFR. 29 CFR 825.301 – Designation of FMLA Leave
10
U.S. Department of Labor. Fact Sheet 28D – Employer Notification Requirements Under the Family and Medical Leave Act
11
U.S. Department of Labor. Enforcement of the FMLA