An ERISA appeal is not just about proving that a benefit denial felt unfair. It is also about building the kind of record a court may later read through a particular lens. That lens is the standard of review. In some cases, a court reviews the denial from scratch. In others, the court gives the plan administrator meaningful deference. That difference can shape what evidence matters, how clearly arguments are framed, and whether procedural problems become central later in litigation.
In this post you’ll learn how to build an ERISA appeal with that later fight in mind: what to gather, how to frame the issues, where plan language matters, and why the administrative record often becomes the whole battlefield. If you want a broader foundation first, it may help to read this overview of how courts choose the level of deference in ERISA cases.
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The modern framework starts with Firestone Tire & Rubber Co. v. Bruch. The Supreme Court explained that a denial of benefits under ERISA is reviewed de novo unless the plan gives the administrator or fiduciary discretionary authority to determine eligibility or construe plan terms. When that discretionary language exists and is enforceable, courts often use a more deferential standard. In practical terms, that can make the appeal record even more important because later judicial review may focus on whether the administrator acted reasonably, not whether the judge would have reached the same result independently.
That is why an appeal often serves two functions at once:
The Department of Labor’s ERISA claims-procedure rules are built around the idea of a “full and fair review.” Claimants are generally entitled to relevant documents on request, and plans that fail to follow required procedures can face consequences in later litigation, including arguments about deemed exhaustion and, in some courts, a less deferential review posture. See the Department of Labor’s guidance on full and fair review and relevant documents and the claims-procedure regulation at 29 C.F.R. § 2560.503-1.
Here’s what this often means in real life: if the standard-of-review fight is coming, the administrative appeal is where many of the future arguments get built.
In many ERISA cases, it does.
The first document to study is not the denial letter. It is the plan itself and any governing summary plan description, certificate, policy, or delegated claims-administration language that may affect discretion. Under Firestone, the central question is often whether the plan expressly gives discretionary authority to the administrator or fiduciary. If it does not, de novo review may be the default. If it does, the case may move into abuse-of-discretion territory, depending on the jurisdiction and other issues.
This is one reason appeal strategy and plan interpretation are so closely connected. Language about who decides eligibility, who interprets terms, and whether a third-party administrator received delegated authority can shape the whole case from the start.
When reading the plan, people in similar situations often focus on: