HomeBlogInsurersUnum Long-Term Disability Denied: How to Fight Back
February 22, 2026
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Unum Long-Term Disability Denied: How to Fight Back

Unum denied your long-term disability claim? Learn how own-occ vs. any-occ definitions, FCEs, and IMEs are used against you — and how to appeal and win.

Unum Long-Term Disability Denied: How to Fight Back

Unum is the largest group disability insurer in the United States, and it has a well-documented history of denying legitimate long-term disability (LTD) claims. If Unum has denied your claim, you are not alone — and you do have options. Understanding how Unum builds its denial and how to systematically dismantle it is the first step toward getting the benefits you paid for.

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Why Unum Denies Long-Term Disability Claims

Unum's denial tactics have been scrutinized by state regulators and documented in litigation for decades. The most common reasons Unum denies LTD claims include:

The "Any Occupation" Switch at 24 Months. Most Unum group LTD policies define disability as inability to perform your "own occupation" for the first 24 months. After that, the definition changes — you must be unable to perform "any occupation" for which you are reasonably suited by education, training, or experience. Unum routinely conducts aggressive reviews right at the 24-month mark, using this definitional shift to terminate benefits even when your condition has not improved.

Functional Capacity Evaluations (FCE). Unum frequently arranges FCEs — one-day physical tests administered by therapists — and uses the results to claim you can perform sedentary or light work. FCEs are highly problematic: they measure performance on a single day and cannot reliably predict sustainable work capacity over a full 8-hour day, five days a week. Courts have repeatedly questioned the reliability of FCE results when used in isolation.

Independent Medical Examinations (IME). Unum maintains relationships with a network of physicians who conduct IMEs. These doctors are paid by Unum and, on average, produce findings that favor Unum's position. Studies have shown that insurer-selected IME physicians side with the insurer in the vast majority of cases. An IME opinion that contradicts years of treating physician records deserves serious challenge.

Surveillance. Unum regularly employs private investigators to conduct video surveillance of claimants. A 20-minute clip of you grocery shopping or walking to your mailbox may be presented as evidence that you are not as limited as you claim. Context matters — your treating physician must explain why brief activities do not represent your ability to sustain full-time employment.

Vocational Analysis. Unum's vocational analysts review your education and work history to identify jobs they claim you can perform. These analyses often rely on outdated Dictionary of Occupational Titles entries and fail to account for your specific functional limitations on a sustained basis.

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The Own-Occupation vs. Any-Occupation Battle

The most consequential fight in most Unum LTD appeals is the definition of disability. If you are a surgeon, attorney, or skilled tradesperson whose specific occupation requires precise physical or cognitive capacity, you may still be able to perform some other type of work — and Unum will argue that disqualifies you from benefits after the 24-month own-occ period expires.

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Your appeal must directly address which definition applies and demonstrate that you cannot perform the material duties of any occupation, not just your prior job. This requires vocational evidence, not just medical evidence.

What Evidence Wins Unum LTD Appeals

To successfully appeal a Unum LTD denial, you need a comprehensive record that includes:

  • Treating physician RFC assessment: A detailed Residual Functional Capacity (RFC) form completed by your doctor that specifies exactly how many hours you can sit, stand, walk, lift, and concentrate — and why.
  • Specialty records and objective test results: Imaging, nerve conduction studies, neuropsychological testing, pulmonary function tests, or other objective findings that corroborate your functional limitations.
  • Vocational expert opinion: An independent vocational expert can counter Unum's job analysis and demonstrate that no reasonable occupation exists given your specific restrictions.
  • Social Security Disability award: If you have been awarded SSDI, Unum is generally required to account for this finding. The Social Security Administration uses a stringent "inability to perform any gainful work" standard — winning SSDI strongly supports your LTD claim.
  • Pharmacy and treatment records: Consistent treatment history shows your condition is genuine and ongoing.
  • Personal statement: A detailed narrative of how your condition affects every aspect of your daily life, including cognitive limitations, fatigue, medication side effects, and unpredictable symptom flares.

If your Unum policy is employer-sponsored, it is almost certainly governed by ERISA. Under ERISA, you have:

  • 180 days to file your administrative appeal after Unum's denial letter. Missing this deadline may permanently bar your claims.
  • The right to a complete copy of your claim file, including all documents, medical reviews, surveillance records, and internal communications. Request this immediately.
  • The right to an independent review: Many states require External Independent Review: Complete Guide" class="auto-link">external review of disability denials.
  • The right to sue under ERISA § 502(a): If your appeal is denied, you can file suit in federal court. Because ERISA severely limits the new evidence you can introduce in court, building a complete administrative record during your appeal is critical.

Send your appeal to: Unum Group, P.O. Box 2980, Portland, ME 04104. Always send via certified mail with return receipt.

Federal courts have established important precedents:

  • Firestone Tire & Rubber Co. v. Bruch (1989): Established the framework for ERISA plan review and recognized the conflict of interest when the insurer both evaluates and pays claims.
  • MetLife v. Glenn (2008): The Supreme Court held that an insurer's structural conflict of interest — being both the decision-maker and the payor — is a factor courts must weigh when reviewing benefit denials.
  • Black & Decker Disability Plan v. Nord (2003): Held that ERISA plan administrators are not required to give special deference to treating physicians, but must adequately explain why they reject treating physician evidence.

Fight Back With ClaimBack

A Unum LTD denial is not the end. Unum counts on claimants giving up. With the right evidence and a well-constructed appeal, many denials are overturned. ClaimBack helps you organize your evidence, draft a compelling appeal letter, and understand every step of the process.

Start your Unum LTD appeal now

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