Open Enrollment Planning Timeline: When to Start (and What to Do at Each Stage)
Most HR professionals start planning open enrollment 30 days out. That's about 60 days too late.
By the time you're at 30 days, your options are already shrinking. Carriers that take time to underwrite are out of the picture. Benefit guides and portals aren't built. And you're going to spend the next four weeks in a full sprint with no margin for anything to go wrong.
Here's what 90 days out looks like instead.
90 Days Out: The Renewal Arrives and Shopping Begins
Most carriers send out renewals 85 to 90 days before the effective date. If your coverage renews January 1st, you're looking at early October. That's when the clock starts.
The first thing we do is look at the renewal carefully. Did rates go up? If so, how much? More importantly, why? A renewal increase is a signal, not a verdict. To understand what's behind it, we request claims data in two tiers.
Tier one covers everyday claims, doctor visits, specialist visits, and prescriptions. Tier two covers the big ones, surgeries, major treatments, and anything that costs the plan a significant amount.
Here's what we're trying to figure out: are these one-time claims, or are they ongoing? Somebody who had a one-time procedure that's now resolved is very different from somebody going through cancer treatment that's going to continue into the next plan year. That distinction changes everything about how we approach shopping the renewal.
We also pull an updated census at this stage. The census plus the claims data is what we send to carriers when we're shopping for quotes.
“If claims are good and rates are good, there are going to be a lot of carriers that want to fight for that group. If claims are bad, it makes things a little more challenging.”
75 Days Out: Proposals Come In
Once we've sent the renewal, claims data, and census to multiple carriers, proposals start coming back. This is where having a broker who actually shops the market matters.
We're looking at several carriers at once: Blue Cross Blue Shield, UnitedHealthcare, Aetna, Cigna, Memorial Hermann, and others. Within some of those carriers, there are multiple products - fully insured, level funded, and specialty options like UHC's Surest product or Blue Cross's Blue Balance level-funded plan. Not all brokers quote all of these. Some just send to one or two and call it done.
A good proposal shows you the current plan and cost versus the proposed plan and cost, the year-over-year difference, and enough plan detail to compare apples to apples. If you're only seeing one or two quotes, you're not seeing the full picture.
60 Days Out: Make the Decision
By the 60-day mark, you need to have your decision made. This is the hard deadline that most companies blow through because nobody made the call in time.
We review all the quotes together, talk through the options, and factor in a few things beyond just price: are employees happy with the current plan? Is anyone going through ongoing treatment where switching carriers could disrupt their care? What's the disruption risk if we move networks?
We can actually run disruption reports that show the overlap between carriers - if you're going from Blue Cross to Aetna, for example, we can see how many of your employees' current doctors and hospitals are also in the Aetna network. You might be switching carriers while barely disrupting anyone. Or you might be switching carriers and 40 percent of your employees' doctors aren't covered. Knowing the difference matters.
Once the carrier decision is made, we finalize the contribution strategy and plan design and get any needed sign-offs.
45 Days Out: Building the Tools
This is the setup window. We're building the online benefits portal with the new plans, prices, and contribution structure loaded in. We're building the Benefits Enrollment Guide - both paper and PDF - that covers the plans, the pricing, and all the practical employee information: how to find a doctor, how to download the carrier app, what to do if you need care while traveling.
Employee communications are drafted at this stage too. The announcement email, the meeting invite, the FAQ document. The goal is that employees have clear, plain-English information about what's changing, what it costs, and what they need to do before they ever walk into an enrollment meeting.
30 Days Out: The Enrollment Meeting
The enrollment is scheduled and the window opens. For most groups, I like to run this in person.
We start with a group presentation - everyone together, about 30 minutes, going through all the plans, pricing, and key information. HMO vs. PPO, what deductibles and co-insurance actually mean, what the network covers. I try to make these meetings informative without being dry. Most employees don't know nearly as much about benefits as they think they do, and a clear group presentation sets everyone up for better individual decisions.
Then we move to one-on-ones. This is where the enrollment actually happens. Do you have a family? What's your budget? Is your spouse on their own plan? Do you have any upcoming procedures or ongoing medications we should account for? These questions lead to real recommendations, not just showing someone a spreadsheet and walking away.
The enrollment window typically stays open for one to one and a half weeks. Most employees complete it the same day. The rest filter in over the following week. And then there are always a few who need some chasing.
Tracking Down Non-Responders
The enrollment portal shows us three groups: people who finished, people who logged in but didn't complete, and people who never logged in at all. We can send automated reminders directly to the people who haven't completed - and only those people.
We try email, calls, voicemails, and texts. After a certain point, some people are just going to be unresponsive. We document the attempts and move on. Employees who decline coverage need to provide a reason - usually that they're on a spouse's or parent's plan - so we can keep the waiver documentation on file.
By the 15th: Submit Everything
Enrollment needs to be fully completed and all paperwork submitted to carriers by the 15th of the month before coverage starts. That gives the carrier time to install the group.
Installation takes about one to two weeks. The carrier builds the group, adds all members and their dependents, and generates final rates. Here's something worth knowing: final rates are always based on who actually enrolled - the exact ages, genders, and zip codes of the people in the group. Your quoted rates are estimates. Final rates are set at installation.
As soon as the carrier sends a welcome letter, the group is officially effective - even if the welcome letter came in late. Coverage is still backdated to the first of the month.
After Enrollment: Cards, Deductions, and Cleanup
Once the group installs, we email out temporary PDF ID cards as soon as we have them. Physical cards follow in the mail and typically arrive around the first. Employees should download their carrier apps and register for the online portals so they always have access to their ID card, their plan information, and their provider network.
Payroll deductions need to get to your payroll team before the first payroll run. We calculate these and send them directly so the right pre-tax and post-tax deductions are set up from day one.
The first few weeks after effective date are cleanup time. Typos in dates of birth, social security numbers, and dependent names are the most common issues. Sometimes people realize they want to add a dependent they forgot. Within the first 30 days, most corrections are still possible.
A Perfect Enrollment vs. a Chaotic One
The best open enrollments have one thing in common: time was set aside for them. A meeting room booked for the day, everyone gathered, and enough time after the group presentation to sit down with each employee one-on-one. Those run smoothly.
The worst ones usually involve a group Zoom with employees scattered across multiple locations. People are on their phones, working on email, or checked out. You lose their attention and you lose the quality of their enrollment decisions. And then you spend the following two weeks trying to catch the people who weren't paying attention.
Starting 90 days out is what makes the difference between these two outcomes. Not rushing the decision. Not building the portal at the last minute. Not chasing people through the enrollment window with no time left.
“The biggest mistake is waiting. We start to lose time, and we run out of options. Some carriers take two weeks to come back with underwriting. If you start 30 days out, those options don’t exist for you.”
