Not all long-term disability denials are the same. While ERISA governs most employer-sponsored plans, the insurer behind your policy shapes how claims are evaluated, how denials are worded, and what strategies are most likely to succeed on appeal. Understanding who you are dealing with – and how they operate – is an important part of building an effective response.

Why the Insurance Company Matters

Each major disability insurer has its own claims handling practices, internal guidelines, and patterns of denial. Some are known for aggressive surveillance tactics. Others rely heavily on in-house medical reviewers whose opinions consistently favor the insurer. Some apply narrow occupational definitions to terminate benefits after an initial approval period. Knowing these tendencies helps you anticipate objections and address them directly in your appeal.

Your denial letter will identify your insurer and cite the specific grounds for the decision. Cross-referencing that reasoning with what is known about your insurer’s claims history gives you a meaningful strategic advantage.

The Major Disability Insurers

The following guides cover the most common long-term disability insurers in the U.S. market. Each page explains how that company typically handles claims, the most common reasons they deny benefits, and what claimants need to know when preparing an appeal.

Unum. One of the largest disability insurers in the country, Unum has faced regulatory scrutiny and class action litigation over its claims practices. If your benefits were denied or terminated by Unum, our guide to Unum disability denials explains what to expect and how to respond.

MetLife. MetLife administers a large volume of group LTD policies through employer benefit plans. Denials frequently involve disputes over medical evidence and functional capacity. See our guide to MetLife disability denials for a breakdown of their process and common appeal strategies.

The Hartford. The Hartford is a major provider of group disability coverage and is known for thorough – and sometimes aggressive – claims investigation. Our guide to Hartford disability denials covers the tactics they use and how claimants can push back effectively.

Cigna. Cigna handles disability claims through its group benefits division and has drawn criticism for restrictive interpretations of policy language. Our guide to Cigna disability denials outlines the most common denial patterns and what evidence tends to carry the most weight in appeals.

Lincoln Financial. Lincoln Financial Group administers group LTD plans for a wide range of employers. Claimants often encounter disputes around the definition of disability and the insurer’s reliance on vocational assessments. Our guide to Lincoln Financial disability denials explains what claimants face and how to build a strong appeal.

Prudential. Prudential is one of the most widely used group disability insurers, particularly among large employers. Denials often hinge on independent medical reviews and surveillance evidence. See our guide to Prudential disability denials for what to expect during the claims and appeal process.

Reliance Standard. Reliance Standard tends to be less well known than some larger carriers but handles a significant volume of group LTD claims. Our guide to Reliance Standard disability denials covers the specific issues claimants commonly encounter with this insurer.

Sun Life. Sun Life Financial administers group disability policies across a range of industries. Our guide to Sun Life disability denials explains how they handle claims and what a successful appeal typically requires.

Your Rights Regardless of Insurer

Whichever company issued your policy, your fundamental appeal rights under ERISA remain the same. You are entitled to a written explanation of any denial, access to your claims file, and the opportunity to submit additional evidence during the appeal process. What changes from insurer to insurer is the strategy required to make that appeal succeed.