When your health plan changes (a benefit redesign, a carrier switch, a cost-sharing adjustment, a network change), several things need to happen at once. Some are legal requirements with specific deadlines. Others are simply good practice but just as important: telling your employees what's changing in plain English, explaining what it means for their costs and coverage, and giving anyone who wants to adjust their elections a real opportunity to do so.
When a health plan change is significant, you're managing two parallel workstreams, and neither waits for the other:
The legal/compliance track has specific deadlines and formal requirements. The three main obligations are:
- Plan document amendment: the formal legal update to the governing plan document, drafted by a benefits attorney. See the Plan Document Amendments page.
- Summary of Material Modifications (SMM): the ERISA-required written notice to participants describing what changed. Due within 60 days if benefits are reduced; 210 days after plan year-end for other changes. See the SMM page.
- Updated Summary of Benefits and Coverage (SBC): if the change affects SBC content, an updated SBC must be distributed at least 60 days before the change takes effect. See the New SBC page.
The SMM and SBC satisfy legal requirements, but they're written for compliance, not comprehension. Most employees won't read them carefully, and even if they do, they may not understand what the change actually means for them. A good plan change notice doesn't need to be long, but it needs to answer the questions employees will actually ask:
- What is changing, specifically. Don't be vague. "We're making some adjustments to the plan" isn't useful. Name the change: "Your deductible is increasing from $1,000 to $1,500." "We're switching carriers from X to Y." "The following services will no longer be covered."
- When it takes effect. Give the exact date. If the change affects mid-year coverage, make sure employees understand it's not waiting for the next open enrollment.
- What it means for their costs. If premiums, deductibles, copays, or out-of-pocket maximums are changing, say so explicitly with before/after figures. Cost changes are what employees care about most and what will generate the most questions if left unclear.
- What they need to do, if anything. Do they need to choose a new primary care physician? Get new insurance cards? Re-enroll? Submit a form? Tell them clearly.
- Who to contact with questions. Name a real person or HR inbox, not just "contact HR."
Significant plan changes, particularly changes that affect cost or coverage in ways that might lead someone to reconsider their elections, may create a special enrollment period. This matters for two reasons:
- Employees who previously waived coverage may now want to enroll (for example, if the plan improved or if a carrier switch affects their providers).
- Employees who are currently enrolled may want to drop coverage or change their election tier if costs are increasing significantly.
You're not always legally required to offer a special enrollment for every plan change, but offering one is often the right call, and failing to give employees a meaningful opportunity to respond to significant changes creates employee relations problems and sometimes legal exposure. Talk to your benefits broker or TPA about whether the specific change you're making warrants opening a special enrollment window. If you do open one, you'll need to collect new enrollment forms and waivers before the change takes effect.
Use this alongside the dedicated pages for each legal obligation. Both tracks need to be complete before the change takes effect.
Legal compliance track
- ☐ Plan document amendment drafted by benefits attorney and formally adopted, Plan Document Amendments page
- ☐ SMM prepared and distributed within the applicable deadline (60 days for benefit reductions; 210 days after plan year-end for other changes), SMM page
- ☐ Updated SBC requested from carrier or TPA and distributed at least 60 days before effective date, New SBC page
Employee communication track
- ☐ Plain-English notice drafted explaining what is changing and why
- ☐ Before/after cost figures included (premiums, deductibles, copays, out-of-pocket max)
- ☐ Effective date stated clearly
- ☐ Any action required from employees spelled out (re-enrollment, new ID cards, new PCP selection, and so on)
- ☐ HR or benefits contact identified for employee questions
- ☐ Decision made on whether to offer a special enrollment period, broker or TPA consulted if unclear
- ☐ If special enrollment offered: window dates communicated to employees
- ☐ If special enrollment offered: enrollment forms and waivers collected before effective date
- ☐ Updated carrier/TPA contact and claims information distributed if carrier is changing
- ☐ New insurance cards distributed (or instructions provided on how to obtain them)