Free guide + printable checklist
Open Enrollment Guide & Best Practices
A 90-day playbook to run a clean, high-participation annual enrollment — timeline, required notices, communication cadence, and the ACA/ERISA calendar. Built from 20+ years of California renewals by the Blue Ocean bench.
- 90/60/30-day timeline
- Required-notice checklist
- Communication cadence that lifts participation
- Post-OE audit & reconciliation
2026 renewal reality
Your renewal letter is going to be higher — plan for it now
California small-group medical trend for 2026 is landing in the 9–14% range across the major carriers (Anthem, Blue Shield, Kaiser, Health Net, UHC), with dental and vision up 4–8%. Signing the renewal as-is is the most expensive option on the table. In a 90-day OE runway you have real levers:
- Alternate funding — level-funded or self-funded with stop-loss (5–20% savings on the right census).
- Plan design — raise deductible, add HDHP+HSA, tier the network, cap OOP.
- Contribution strategy — hold employer dollars flat, shift spread to buy-up tiers.
- Bundle voluntary to soften the medical hit with perceived value (accident, hospital, pet, legal).
- Test ICHRA if you have a wide age/geography spread or a shrinking participation problem.
- Re-shop the whole market — all CA brokers get the same fully-insured rates, so a second look costs you nothing.
The 90-day OE timeline
Great open enrollments aren't lucky — they're managed like a product launch. Here's the cadence we run for our California employer clients from renewal kickoff to post-OE audit.
90–60 days out
- Confirm renewal date and refresh census (active, waived, COBRA, LOA).
- Set renewal goals: cost target, contribution strategy, participation lift.
- Model alternate plan designs, HSA/HRA/FSA scenarios, network changes.
- Test ACA affordability for 2026 — the threshold is 9.96% of employee household income (up from 9.02% in 2025). The lowest-cost self-only plan offered must not exceed this percentage for ALEs with 50+ employees.
60–30 days out
- Lock plan lineup, rates, and employer contribution strategy.
- Update Section 125 plan doc; refresh SBC, SPD, SAR, Medicare Part D notices.
- Build the communication plan — kickoff email, benefits guide, decision-support tool.
- Load plans in ben-admin / HCM and run a full test election cycle end-to-end.
OE window (2–3 weeks)
- Day 1 announcement with a clear headline, deadline, and where-to-get-help.
- 3+ reminders (day 1, midpoint, 48-hour). Segment the not-yet-enrolled.
- Host 2+ live sessions at different times and post recordings.
- Daily dashboard: completion %, waivers, HSA elections, EOI, dependent docs.
After OE closes
- Reconcile carrier invoices line-by-line for the first two billing cycles.
- Push EDI files, confirm effective dates, verify payroll deductions.
- Distribute confirmation statements with a defined correction window.
- 30-day debrief: what worked, what didn't, what to change next year.
What high-participation employers do differently
Product-launch mentality
Single owner, weekly stand-ups, one dashboard, one deadline.
Decision-support tools
Jellyvision, Nayya, Picwell — participation and HSA adoption climb.
Lead with value in dollars
Show employer contribution in $, not just premium change.
Segment communications
Different email to enrolled vs not-yet vs waived. Manager talking points.
Bundle voluntary
Accident, hospital, critical illness, pet, legal, ID — low cost, high perceived value.
Measure everything
Enrollment %, HSA adoption, EAP awareness, NPS on the OE process itself.
Required notices matrix
The federal and California notices every group plan owes at open enrollment — who gets each, when it's due, and the primary regulator source. Missing a notice is the fastest way to turn a routine DOL audit into a penalty letter.
| Notice | Who receives it | When it's due | Source |
|---|---|---|---|
| Summary of Benefits & Coverage (SBC) | All eligible employees | With enrollment materials; within 7 business days of request | Regulator |
| Summary Plan Description (SPD) | All plan participants | Within 90 days of coverage start; updated every 5 years | Regulator |
| Medicare Part D Creditable Coverage | All Medicare-eligible individuals | Annually by October 14 (before Medicare AEP) | Regulator |
| CHIP Notice | All employees in CHIP states (CA included) | Annually before plan year start | Regulator |
| Women's Health & Cancer Rights (WHCRA) | All plan participants | At enrollment and annually thereafter | Regulator |
| Newborns' & Mothers' Health Protection | All plan participants | In the SPD; at enrollment | Regulator |
| HIPAA Notice of Privacy Practices | All plan participants | At enrollment; reminder every 3 years | Regulator |
| Section 125 Plan Document (POP) | On file with employer | Adopted/restated before plan year; amend for changes | Regulator |
| Form 1094-C / 1095-C (ALEs 50+ FTE) | Full-time EEs & IRS | 1095-C to EEs by Mar 3, 2026; IRS e-file by Mar 31, 2026 | Regulator |
| Grandfathered Plan Status (if applicable) | All plan participants | In any plan communication describing benefits | Regulator |
| Marketplace Coverage Notice (Exchange Notice) | All new hires | Within 14 days of hire | Regulator |
| CalSavers Registration (if no retirement plan) | CA employers with 1+ employees | Ongoing — enroll or certify exemption | Regulator |
Deadlines shown reflect 2026 plan-year cycles for calendar-year plans. Non-calendar-year plans adjust proportionally. Not legal advice — confirm application to your specific plan with counsel.
Employee email cadence — copy & paste
The three emails that do most of the work. Swap the bracketed placeholders for your plan details, dates, and links.
Day 1 — Kickoff
Subject: Your 2026 benefits are here — enroll by [DATE]
Team, Open enrollment for your 2026 benefits opens today and closes [DATE at 11:59 PM PT]. This is your once-a-year window to add, drop, or change coverage without a qualifying life event. What's new for 2026: • [Plan change #1 — e.g. new HDHP with employer HSA seed] • [Contribution change — in dollars, not %] • [New voluntary benefit — accident, hospital, pet, legal] What to do now: 1. Review the benefits guide: [LINK] 2. Log in to [BEN-ADMIN] and complete your election — even if you're keeping the same plan (required this year). 3. Join a live Q&A: [DATE/TIME] or [DATE/TIME] — [MEETING LINK] Questions? Reply here or reach [HR CONTACT].
Midpoint reminder
Subject: Halfway through OE — [X]% of the team is enrolled
Quick update — we're halfway through open enrollment and [X]% of the team has completed elections. If you're already done, thank you. If you haven't started yet: • It takes about 15 minutes. • Skipping it means [default outcome — e.g. no FSA, no HSA, no voluntary coverage in 2026]. • Log in here: [LINK] Still deciding? Two things that usually help: • [Decision-support tool link] — 5-question wizard that recommends a plan. • Office hours today [TIME] — drop-in Zoom, no appointment needed.
48-hour push
Subject: 48 hours left — action required
Open enrollment closes [DATE] at 11:59 PM PT. After that, your 2026 elections are locked until next OE (unless you have a qualifying life event like marriage, birth, or loss of other coverage). If you have NOT completed your election: → [BEN-ADMIN LINK] — takes 15 minutes. If you're intentionally waiving coverage, you still need to log in and record the waiver. Otherwise you'll be defaulted to [DEFAULT], which may not be what you want. Need help right now? [HR CONTACT] is available until [TIME] today and tomorrow.
What employees actually ask
Share this section with your team, or lift the answers into your benefits guide. These are the four questions HR fields on repeat every OE window.
HSA vs FSA — which one should I pick?
HSA if you're on the HDHP: money is yours forever, rolls over, invests, triple tax-advantaged. FSA (health) if you're on a copay plan and expect predictable expenses — use-it-or-lose-it with a small carryover. You can pair a limited-purpose FSA (dental/vision only) with an HSA.
What is EOI and when do I need it?
Evidence of Insurability — a health questionnaire for voluntary life or disability amounts above the guaranteed-issue limit. Submit during OE and coverage starts once the carrier approves. Skip it and you're capped at the guarantee-issue amount.
What documents do I need to add a dependent?
Spouse: marriage certificate. Child: birth certificate or adoption/court order. Domestic partner: state DP registration. Upload during OE — carriers will terminate coverage if docs aren't received within the audit window (usually 30–60 days).
What counts as a qualifying life event mid-year?
Marriage, divorce, birth, adoption, death, loss of other coverage, gain of other coverage, dependent aging off, change in employment status, Medicare/Medicaid gain or loss. You have 30 days (60 for CHIP/Medicaid) to make changes — miss the window and you wait until next OE.
Authoritative resources & references
Cross-reference the primary sources we build against. Every claim in our checklist ties back to a federal or California agency publication.
U.S. Department of Labor — EBSA
ERISA compliance, notices, Form 5500, SBCs.
IRS — Affordable Care Act for Employers
1094-C / 1095-C, affordability, PCORI, Section 125.
CMS — Creditable Coverage & RxDC
Medicare Part D disclosures, RxDC reporting.
Covered California for Small Business
California employer SHOP marketplace.
CA EDD — SDI & Paid Family Leave
State-run wage replacement programs.
CA Civil Rights Department
CFRA, PDL, reproductive-loss and bereavement leave.
CA Labor Commissioner — Paid Sick Leave
CA sick leave accrual, caps, and local ordinances.
CalSavers Retirement
Mandatory state retirement program for employers without a plan.
SHRM Open Enrollment Toolkits
Benchmark communication templates and playbooks.
HealthCare.gov Small Business (SHOP)
Federal small-business coverage resources.