If you’re dealing with an ERISA benefits denial, one of the most frustrating parts is realizing that the lawsuit often turns on paperwork that was created before the case ever reached court. In many ERISA disability and health-benefit disputes, the judge’s review is heavily focused on the claim file and appeal record assembled during the internal claims process. The U.S. Department of Labor’s claims-procedure rules are built around that idea of a “full and fair review,” including access to relevant claim documents and an opportunity to submit supporting material during the appeal process (29 C.F.R. § 2560.503-1; DOL FAQ).
That is why the administrative record matters so much. If you want a deeper overview of why this paper file can end up carrying so much weight, it helps to start with this explanation of how the claim file often drives the whole ERISA dispute.
In this post, you’ll learn six administrative record mistakes that can quietly make an ERISA case more difficult to prove, more expensive to litigate, and easier for the insurer or plan administrator to defend. You’ll also see why many people in this situation end up looking for counsel with documented experience handling ERISA record-based litigation, because small omissions in the file can create big problems later.
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ERISA cases are unusual. In many benefit disputes, the court is not treating the lawsuit like a brand-new trial with unlimited fresh evidence. Instead, the court is often reviewing the plan administrator’s decision under standards shaped by the plan language and Supreme Court precedent. In Firestone Tire & Rubber Co. v. Bruch, the Supreme Court explained that de novo review applies unless the plan gives the administrator discretionary authority. Later, in Metropolitan Life Ins. Co. v. Glenn, the Court also confirmed that a structural conflict of interest can matter when the entity deciding the claim is also paying it.
Here’s what that often means in practical terms: the record created during the claim and appeal process may become the center of the case. If important medical evidence, vocational evidence, plan documents, or procedural objections never make it into that file, fixing the problem later can become much harder.
The stakes are not theoretical. The Department of Labor reports that the Employee Benefits Security Administration oversees benefit plans covering 156 million workers, retirees, and dependents, and in fiscal year 2024 it recovered $1.384 billion for plans, participants, and beneficiaries through enforcement, informal complaint resolution, and related programs (EBSA FY 2024 fact sheet). ERISA disputes affect a huge number of people, and the process is technical enough that record-building mistakes are common.
One of the most common mistakes is assuming the first denial is just a routine bump in the road and that the “real case” starts after a lawsuit is filed.
That mindset can be costly. ERISA’s claims-procedure regulation gives claimants the right to a full and fair review on appeal, including the chance to submit written comments, documents, records, and other information relating to the claim (29 C.F.R. § 2560.503-1). In general terms, the internal appeal is often the last clear opportunity to strengthen the evidentiary file before a judge reviews what the administrator had in front of it.
A short appeal letter that simply says “I disagree” may leave too much on the table. Many denials cite missing proof of restrictions, lack of objective support, incomplete treatment notes, inconsistent occupational evidence, or plan-definition issues. If those gaps are not addressed during the appeal, the administrator may later argue that the record never contained the evidence needed to reverse the denial.
This is one reason many claimants spend time learning how to build a claim file that actually supports later litigation before the appeal deadline closes in.
Another mistake is appealing blind.
The Department of Labor’s regulation states that a claimant is entitled, upon request and free of charge, to reasonable access to and copies of all documents, records, and other information relevant to the claim (29 C.F.R. § 2560.503-1). DOL guidance also explains that relevant material can include not just the documents expressly relied on, but also certain internal guidelines, protocols, and information showing compliance with claims-processing safeguards (DOL Compliance Assistance Guidance).
In practice, people sometimes send an appeal before obtaining: