An open enrollment checklist for California employers needs to start in August, not October, if your plan renews on January 1. ServicePro Insurance Solutions runs renewal and open enrollment for San Diego and Southern California employers every year, and the pattern is consistent: companies that start 90 to 120 days out get real carrier comparisons and time to fix problems. Companies that start 30 days out get whatever renewal rate lands on their desk.
Why August Is the Right Time to Start
A January 1 renewal means carriers need final decisions by early December in most cases, and a broker needs weeks before that to shop the market, request competing quotes, and model plan design changes. Counting backward, that puts the real starting line in August or early September — not because the calendar says so, but because carrier underwriting and quote turnaround times don’t move faster just because a business waited.
Employers who wait until October are usually choosing between accepting the incumbent carrier’s renewal or scrambling through a compressed comparison process with far less room to negotiate.
What’s Changing for 2026 Plans
This year’s renewal conversation is happening against a rougher cost backdrop than usual. Total employer health benefit costs are projected to rise 6.7% in 2026, pushing the average above $18,500 per employee — the steepest increase in 15 years, according to Mercer’s National Survey of Employer-Sponsored Health Plans. The ACA’s out-of-pocket maximum is also rising to $10,600 for individual coverage and $21,200 for family coverage for 2026 plan years, per the CMS Notice of Benefit and Payment Parameters.
None of that is a reason to panic — it’s a reason to shop early. A plan design change, a level-funded option, or a different carrier network can offset a meaningful chunk of that increase, but only if there’s enough runway to model the alternatives before a decision is due.
Your 90-Day Open Enrollment Checklist
Here’s the sequence ServicePro walks California employers through ahead of a January 1 renewal:
- 90 days out (August): Confirm headcount and full-time equivalent counts, review last year’s claims experience, and request renewal projections from your current carrier
- 75 days out: Shop the market — get competing quotes from at least 3-4 carriers and compare plan designs, not just premiums
- 60 days out: Decide on plan changes, employer contribution levels, and whether to add or adjust ancillary benefits like dental, vision, or life
- 45 days out: Prepare open enrollment materials, updated Summary Plan Description, and employee communications
- 30 days out: Hold open enrollment meetings and distribute required notices to employees
- By December 1: Confirm all enrollment elections are submitted to the carrier ahead of the January 1 effective date
Required Notices and Communications
Open enrollment carries its own paperwork obligations. Employers need to give employees an updated Summary Plan Description or a Summary of Material Modifications reflecting any 2026 changes, along with a Summary of Benefits and Coverage for each plan option offered. Employers also need to redistribute notices about marketplace coverage availability, HIPAA privacy practices, and CHIP eligibility where applicable — these aren’t optional extras, they’re standard annual requirements tied to maintaining a compliant group health plan.
Skipping or reusing an outdated version of these notices is one of the more common findings when a plan gets audited, even when the underlying coverage decisions were sound.
Common Open Enrollment Mistakes That Cost Money
The employers who end up overpaying or under-communicating during open enrollment tend to make the same handful of errors: waiting for the incumbent carrier’s renewal letter before starting any comparison shopping, assuming last year’s contribution strategy still fits this year’s premium increase, and treating employee communication as an afterthought instead of the thing that actually drives enrollment satisfaction. A plan that looks good on paper but gets explained poorly to employees generates just as many complaints as a genuinely weak plan.
Our breakdown of rising 2026 employer health insurance costs covers the cost side of this in more depth if you want the full picture before your renewal conversation starts.
How ServicePro Runs Open Enrollment So You Don’t Have To
ServicePro Insurance Solutions manages the entire renewal timeline for clients — pulling claims data, shopping group medical options across 50+ carriers, coordinating dental and vision and life and disability renewals alongside it, and preparing the employee communications and required notices. Employers get a side-by-side comparison instead of a single renewal number to accept or reject.
Request your open enrollment review now, while there’s still enough runway to actually shop the market before your renewal date.
Building This Into an Annual Rhythm
The goal isn’t to treat open enrollment as a once-a-year fire drill. Employers who run this checklist every August, year after year, end up with better data going into each renewal — actual claims trends, a documented contribution history, and a broker relationship that already knows the account instead of starting from zero. Our guide on 2026 small business benefits trends covers how that annual rhythm connects to broader plan strategy, including level-funded plans and ICHRA options worth evaluating at renewal.
Frequently Asked Questions
When should a California employer start open enrollment prep for a January 1 renewal?
Around 90 to 120 days out — meaning August for most calendar-year plans. That gives enough time to shop the market, compare plan designs, and prepare employee communications before decisions are due.
What notices are employers required to distribute during open enrollment?
At minimum: an updated Summary Plan Description or Summary of Material Modifications, a Summary of Benefits and Coverage for each plan option, and standard annual notices covering marketplace availability, HIPAA privacy, and CHIP eligibility where applicable.
How much are health insurance costs expected to rise for 2026?
Mercer projects a 6.7% increase in total employer health benefit costs for 2026, pushing the average above $18,500 per employee — the sharpest rise in 15 years.
How do I get started on my company’s open enrollment review?
Contact ServicePro Insurance Solutions for an open enrollment review. We’ll pull your current plan data, shop the market, and give you a full comparison before your renewal deadline arrives.
Ready to Get Started?
An open enrollment checklist for California employers only works if it starts early enough to matter. Let’s get your review scheduled now.
Request a Quote or call us at (760) 965-7675.