Open enrollment season routinely produces new carrier booklets, updated benefit summaries, and revised certificates of coverage. None of them satisfy the employer’s Employee Retirement Income Security Act (ERISA) documentation obligations, and year-end is when the gap between what carriers provide and what the law requires tends to widen fastest.
Under ERISA, every employer-sponsored health and welfare plan must be established and maintained under a written plan document, and participants must receive a summary plan description (SPD) written in a manner calculated to be understood by the average plan participant. Carrier booklets describe the insurance policy. They do not document the employer’s plan, such as its eligibility rules, waiting periods, funding arrangements, or the employer-specific provisions that ERISA requires. That responsibility stays with the plan sponsor.
A carrier change, a shift in employee cost-sharing, a new benefit added or dropped, a change in eligibility rules, an administrator switch, all are material modifications that require either an updated SPD or a summary of material modifications (SMM) distributed to participants. For changes that do not reduce benefits, ERISA allows up to 210 days after the close of the plan year.
For a material reduction in covered services or benefits, the deadline tightens to 60 days after the change is adopted, per the DOL’s regulations at 29 CFR §2520.104b-3. Examples include higher deductibles, eliminated coverage categories, and increased copayments.
The distinction matters because most year-end renewals involve cost-sharing changes that fall into the accelerated category. An employer that finalizes a plan design in November with higher employee contributions and assumes the 210-day window applies is already out of compliance.
The practical exercise before January 1 is confirming that the plan document reflects what the plan is actually doing. A plan operating under terms that differ from its written document is not just an administrative problem in a claim dispute or a DOL audit. It is generally the document that governs, and gaps between the plan’s operation and its documentation tend to surface at the worst possible time.
The same discipline applies to the summary of material modification (SMM). Distributing an updated SPD by the applicable deadline satisfies both requirements at once, which is why many plan sponsors use the annual renewal as the trigger for a full document review rather than managing a rolling stack of SMMs.
Failure to furnish an SPD or plan document within 30 days of a written participant request can result in a penalty of up to $110 per day under ERISA Section 502(c)(1), per the DOL’s regulations at 29 CFR §2575.502c-1. Missing or outdated documents are also among the most common triggers for a DOL audit. Neither penalty depends on the employer being aware of the gap. The obligation to maintain current documents and produce them on request sits with the plan sponsor regardless of who administers the plan.
The COBRA reconciliation article and the gag clause attestation deadline carry the same year-end logic. Obligations that look like they belong to someone else until they do not.
