To fill out FMLA paperwork, you start by telling your employer you need leave, then complete the identifying section at the top of the medical certification form (WH-380-E for your own condition, WH-380-F for a family member’s), hand it to the healthcare provider who fills in the medical sections, and return the completed form to your employer within 15 calendar days. The medical certification is the only form you actively work on. Everything else on the FMLA form list is paperwork your employer generates and gives to you.
The rest comes down to getting the details right, because a certification that’s blank, vague, or late is the most common reason FMLA leave gets denied.
Confirm You’re Eligible First
Paperwork won’t help if you don’t qualify. Three requirements have to all be true: you’ve worked for your employer for at least 12 months, you’ve logged at least 1,250 hours during the 12 months before your leave starts, and you work at a location where your employer has 50 or more employees within a 75-mile radius.1U.S. Department of Labor. FMLA Frequently Asked Questions The 12 months don’t have to be consecutive, though generally only time within the last seven years counts.
The 75-mile figure is measured by surface roads, not straight-line distance.2eCFR. 29 CFR 825.111 – Determining Whether 50 Employees Are Employed Within 75 Miles A small satellite office far from headquarters may leave you short of the threshold even if the company overall is huge. Public agencies and public or private elementary and secondary schools are covered regardless of headcount, but individual employees at those schools still need 50 coworkers within 75 miles.
The reason for the leave also has to qualify. FMLA covers a serious health condition, which means either an overnight hospital stay or continuing treatment by a healthcare provider, generally involving more than three consecutive days of incapacity plus two provider visits or one visit with a continuing treatment regimen.3eCFR. 29 CFR 825.113 – Serious Health Condition Chronic conditions like epilepsy, asthma, or diabetes qualify if they require periodic provider visits. Pregnancy and prenatal care count. The common cold, flu, ear infections, upset stomach, routine dental work, and most cosmetic procedures do not. If the certification your provider fills out describes something that doesn’t meet the legal definition, your employer can deny the leave.
Which Forms You’ll Actually Handle
The Department of Labor publishes optional standardized forms that most employers use.4U.S. Department of Labor. FMLA Forms Only one or two involve any writing from you:
- WH-380-E, Medical Certification for Employee, for your own serious health condition.
- WH-380-F, Medical Certification for Family Member, when you’re caring for a spouse, child, or parent.
- WH-384, Qualifying Exigency Certification, for leave tied to a family member’s military deployment.
- WH-385 or WH-385-V, Military Caregiver Certification, when caring for a servicemember or veteran.
Your employer generates the other forms in the FMLA set: WH-381 (Notice of Eligibility and Rights & Responsibilities), which tells you whether you’re eligible and what’s expected of you during leave, and WH-382 (Designation Notice), which tells you whether the leave has been approved as FMLA-protected. You receive these; you don’t fill them out.
Many employers also have their own internal leave-request form or online portal on top of the DOL paperwork. If yours does, fill in your name, job title, employee ID, the reason for leave, and your requested dates. State whether you need continuous leave (a single unbroken block), intermittent leave (separate days or partial days off), or a reduced schedule. For intermittent leave, give your best estimate of how often you’ll need time off and how long each absence will last.
Notify Your Employer
FMLA does not require a specific request form. You follow your employer’s normal procedure for requesting time off, and you don’t even need to say “FMLA.”5U.S. Department of Labor. Fact Sheet 28E – Requesting Leave Under the Family and Medical Leave Act You just have to give enough information for your employer to see that the leave might qualify. “I need time off for surgery” or “my mother has been hospitalized and I need to care for her” is enough to start the process.
Timing matters. When the need for leave is foreseeable, like a planned surgery, due date, or adoption placement, you must give at least 30 days’ advance notice.6eCFR. 29 CFR 825.302 – Employee Notice Requirements for Foreseeable FMLA Leave If circumstances change or an emergency arises, give notice as soon as practicable, typically the same day or the next business day after you learn of the need. For planned medical treatment, you should also make a reasonable effort to schedule it in a way that minimizes disruption at work.
Once you’ve given notice, your employer is on the clock. Within five business days it must tell you whether you’re eligible, usually on Form WH-381, and it will typically request a medical certification at the same time.7U.S. Department of Labor. Fact Sheet 28D – Employer Notification Requirements Under the Family and Medical Leave Act That request is what starts your own 15-day window.
Fill Out the Employee Section of the Certification
The top of Form WH-380-E (or WH-380-F for a family member) asks for basic identifying information: your name, the name of the person with the medical condition, and, on the family member version, your relationship to the patient. Complete this before handing the form to the healthcare provider, so the provider knows who the request is for and which employer to reference.
That’s the extent of what you personally write on the medical certification. Do not attempt to answer the medical questions. Those are for the provider, and your employer can reject a certification that isn’t completed by a healthcare provider.
What Your Healthcare Provider Fills In
The provider sections ask for the date the condition began, how long it’s expected to last, whether inpatient care was involved, and the nature of the treatment regimen. When the leave is for your own condition, the form asks whether you’re unable to perform any of your job functions. For a family member, it asks whether the person needs assistance with basic daily activities or transportation to appointments.
If you’re requesting intermittent leave, the certification has to include estimated frequency and duration of episodes or treatment visits. This is where the most applications stall. Vague answers like “as needed” or “indefinitely” aren’t enough. Ask your provider for a specific medical estimate, even if it’s a range, such as “flare-ups 2–3 times per month lasting 1–2 days each.” Concrete numbers give your employer the information the regulations require and make approval far more likely.
A few practical steps before you hand over the form:
- Attach a copy of your written job description if you have one, so the provider can speak to whether you can perform your specific duties.
- Point out the intermittent-leave section if that’s what you need, and ask the provider to be specific.
- Check every field before you leave the office. Blank lines are the single most common reason a certification gets bounced back.
Return the Completed Form Within 15 Calendar Days
Once your employer requests the certification, you have 15 calendar days to return it.8eCFR. 29 CFR 825.305 – Certification, General Rule Missing that deadline without a good reason can result in your leave being denied outright. Don’t wait until day 14 to call your doctor’s office. Deliver the form to the provider immediately, follow up within a few days, and send it to your employer as soon as it’s back in your hands. If circumstances genuinely prevent you from meeting the deadline despite your best efforts, the regulations allow extra time, but you have to be able to explain why.
Submit the form the way your employer’s policy specifies. If you email it, save the sent-message confirmation. If you drop it off in person, note the date, time, and who received it. If you fax it, keep the transmission report.
If the Certification Comes Back Incomplete or Vague
A certification is “incomplete” when fields are left blank and “insufficient” when the answers are too vague or don’t respond to what the form asked. Your employer can’t simply deny the leave in either case. It must tell you in writing what’s missing or unclear, and you get seven calendar days to fix it.8eCFR. 29 CFR 825.305 – Certification, General Rule
Use that window fast. Contact your healthcare provider the day you get the notice, tell them exactly which fields need correction, and get the revised form back before the seven days run out. If the deficiencies still aren’t cured, your employer can deny the leave.
Your employer is also allowed to contact your healthcare provider directly to authenticate the form or clarify a response, but only through an HR professional, a leave administrator, or a management official. Your direct supervisor is never permitted to make that call.9eCFR. 29 CFR 825.307 – Authentication and Clarification of Medical Certification The employer cannot request medical information beyond what the form asks for.
Keep Copies of Everything
Keep a personal file with copies of every form you submit and every notice you receive: the completed certification, the employer’s WH-381 eligibility notice, its WH-382 designation notice, and any emails or delivery confirmations tied to submission dates. Note the date, time, and recipient of any in-person drop-off, and write down what was said in any phone conversation with HR about your leave. This level of documentation feels excessive until a dispute comes up. At that point, the paper trail is the only thing that decides it.