How to Complete and Submit the Unum Short Term Disability Claim Form

To file a Unum short-term disability claim, you complete a three-part form — your section, your employer’s section, and your attending physician’s section — and submit the whole package through the MyUnum online portal, by fax to 800-447-2498, or by certified mail to Unum’s claims center at P.O. Box 100158, Columbia, SC 29202. The online portal is the fastest route and typically takes under 20 minutes.¹ Once Unum has the completed claim, a claims examiner generally has 45 days to issue a decision, with written-notice extensions bringing the maximum to 105 days.²

What to Gather Before You Start

Most delays trace back to missing paperwork at the moment of filing. Pull everything together first, then open the form.

Your Social Security number, the Unum group policy number (HR has this), and your employee ID.
The date your disability began, your last day worked, and any dates you attempted to return.
Names, addresses, phone numbers, and fax numbers for every provider who has treated the condition.
Recent pay stubs or your most recent W-2, which Unum uses to calculate your benefit.
Medical records: lab reports, imaging, surgical notes, prescription lists, and anything else that documents your diagnosis and functional limits.
Unum’s signed authorization for release of medical information so the examiner can request records directly from your providers.³

The Three-Part Claim Form

The Unum form has three sections, each filled out by a different person. Nothing moves forward until all three are in.³

Your Section (Employee’s Statement)

You provide your identifying information, describe the condition, and explain how it prevents you from doing your job. Be specific about limitations. “I cannot sit for more than 15 minutes without severe lower back pain” tells the examiner something; “I have back problems” does not. Include when symptoms started, when you stopped working, and whether the condition is work-related. Work injuries normally go through workers’ compensation rather than short-term disability.

Your Employer’s Section

HR fills this out, confirming your job title, salary, work schedule, employment status, and last day worked, plus the tax information Unum needs to set up payments. Contact HR the moment you decide to file. They work on their own timeline, and the whole claim stalls until this section is done. A few days of notice is usually enough.

Your Doctor’s Section (Attending Physician’s Statement)

This section carries the most weight. Your treating physician documents the diagnosis, lists objective clinical findings (imaging, labs, examination results), describes the treatment plan, specifies your restrictions and limitations, and gives an expected duration and prognosis. Bring your gathered medical records to the appointment so the doctor can be concrete rather than general. Vague or thin physician statements are one of the most common reasons claims get delayed or denied.

How to Submit the Form

Unum takes claims through three channels.¹

Online through the MyUnum for Members portal or the MyUnum mobile app on Apple or Android. You can photograph and upload documents from your phone, your progress saves if you stop partway through, and you get immediate confirmation that Unum received the submission.
By fax to 800-447-2498. Keep the transmission confirmation as proof of delivery, and allow about 14 days for processing.⁴
By certified mail with return receipt requested to Unum Life Insurance Company of America, P.O. Box 100158, Columbia, SC 29202. The return receipt gives you a dated record of when Unum received the materials.⁴

If you have questions about filing, or want to check whether your employer allows phone-based filing, Unum’s leave and disability line is 866-779-1054.¹

What Happens After You Submit

You can track the claim through the MyUnum portal or mobile app. The dashboard shows status updates, outstanding information requests, and payment details once benefits are approved.¹ Turn on text or email alerts. That is the easiest way to catch a request for more documentation before it turns into a delay.

A dedicated claims examiner reviews your medical evidence against the definition of disability in your specific policy. The examiner may contact you or your physician for clarification or additional diagnostic evidence. Respond quickly. Unum sometimes also arranges an independent medical examination with a doctor of its choosing. Cooperating with that exam is effectively required. Refusing one gives Unum a straightforward basis to deny or close the claim.

How Long Unum Has to Decide

For group plans governed by ERISA, Unum has 45 days from receipt of a completed claim to issue a decision. If circumstances outside Unum’s control prevent a decision within that window, it can extend the deadline by 30 days, but it must notify you in writing before the initial 45 days expire and explain what is still unresolved. A second 30-day extension is permitted under the same notice rules, bringing the maximum to 105 days.² If Unum asks you for additional information, the clock pauses until you respond, and you get at least 45 days to supply it.⁵ Approval triggers a formal letter with your benefit amount, payment schedule, and expected benefit duration.

Policy Terms That Decide the Outcome

The Elimination Period

Every short-term policy has a waiting period that must pass after disability begins before any benefits are paid. For short-term coverage, this commonly runs 7 to 30 days, with 14 days most typical.⁶ Your exact elimination period is in the policy certificate your employer provided. No benefits are paid for days inside that window, so you need to plan for the gap.

Definition of Disability

How your policy defines “disability” is often what decides approval. Most group short-term policies use an “own occupation” standard, meaning you qualify if your condition prevents you from performing the main duties of your specific job. Some policies shift to an “any occupation” standard after a set period, under which Unum evaluates whether you could perform any work suited to your education, training, and experience. The exact language is in your policy certificate.

Benefit Amount and Offsets

Unum short-term disability benefits replace up to 60% of your monthly income, with the actual percentage depending on the plan your employer selected.⁷ Benefits typically run 13 to 26 weeks, with some plans extending to 52 weeks. Your gross benefit may be reduced by offsets, meaning income from state disability, Social Security, or workers’ compensation that your policy requires Unum to deduct.

Pre-Existing Condition Clauses

Most group disability policies exclude or limit benefits for conditions you were treated for, took medication for, or saw a doctor about during a lookback period before coverage started. A common structure is a “3/12” limitation: treatment during the 3 months before coverage began means disabilities arising from that condition are excluded for the first 12 months of coverage. Your policy certificate specifies the lookback and exclusion windows. If your condition might fall into this category, check those dates before filing.

If Your Claim Is Denied

A denial is not the end of the matter, but the response window is strict. Under ERISA, Unum must give you at least 180 days from the date of the denial letter to file an internal administrative appeal.² Miss that window and further action on the claim is generally foreclosed.

The denial letter must list the specific reasons for the decision, the policy provisions Unum relied on, and what additional information could change the outcome. Read it carefully. Many denials turn on insufficient medical documentation rather than a flat finding that you are not disabled. If that is your situation, the appeal is where you submit stronger evidence: updated treatment notes, new test results, a functional capacity evaluation, or a narrative letter from your physician that directly answers the reasons Unum cited.

The appeal matters even more than it looks. For ERISA-governed plans, a federal court reviewing a later lawsuit generally confines itself to the evidence that was in the administrative record at the time of the appeal decision. New evidence raised for the first time in court is often excluded. The appeal is your best, and sometimes only, chance to build the record.

Mistakes That Sink Valid Claims

Filing late is the most avoidable error. Notify your employer and start the process as soon as you know you will be out beyond the elimination period. Submitting an incomplete form, especially a vague Attending Physician’s Statement, is probably the single most common cause of preventable delays. Give your doctor the records and time to be thorough.

Keep your Employee’s Statement consistent with what your doctor documents. If your form says you cannot lift more than five pounds and your medical records show no lifting restriction, the examiner will flag the gap. Be aware that Unum may review publicly available social media during the claims process. A photo at an outdoor event does not disprove a disability, but insurers have used such posts to raise doubt about reported limitations. Tight privacy settings are a practical precaution.

Keep copies of everything you submit and everything Unum sends you. If you end up appealing or consulting an attorney, a complete paper trail makes the next step far easier.

1
Unum. How to File Your Unum Claim or Leave of Absence
2
eCFR. 29 CFR 2560.503-1 – Claims Procedure
3
Pennsylvania State University. Understanding Unum’s Disability Claims Process
4
Unum. Contact Policyholder Customer Service and Support
5
eCFR. 29 CFR Part 2560 – Rules and Regulations for Administration and Enforcement
6
Guardian. What Is Short Term Disability Insurance
7
Unum. Disability Insurance for Employees