How to run a benefits open enrollment campaign people actually act on

A benefits open enrollment campaign is the run of messages that gets every eligible employee to review their benefits and make their choices before the enrollment window closes. Most campaigns go wrong in a familiar way.

HR sends one long email with a PDF attached, a reminder to everyone a week later and a final “last chance” to the whole company. The people who already enrolled get annoyed. The people who didn’t still haven’t, and the benefits team spends the last few days answering the same questions over and over.

This playbook covers one job: running an enrollment campaign that people read, understand and act on before the deadline. For the mechanics of scheduling everything from a single date, see how to build open enrollment communications around one deadline.

Why do benefits open enrollment campaigns get ignored?

Enrollment campaigns get ignored because they ask everyone to do everything at once, in one long email, on a channel half the workforce doesn’t check.

• One message for everyone. Full-time, part-time and new starters all get the same text, so most of it doesn’t apply to the person reading it.
• The wrong channel. Hourly and field staff often have no work inbox. An email-only campaign misses them, and they find out after the window shuts.
• Reminders to the wrong people. Resending to the whole company teaches the people who already enrolled to ignore HR.
• Questions with nowhere to go. Every “which plan is right for me?” turns into an email or a call to the benefits team.

What does a successful benefits open enrollment campaign look like?

A benefits open enrollment campaign has worked when every eligible person has made a choice before the deadline, and the benefits team wasn’t buried in repeat questions getting there.

• Every message is tied to one deadline, so if the date moves, the schedule moves with it.
• Managers knew what was coming before their teams did.
• Each group got the version that applies to them, on the channel they read.
• People could compare plans and get answers in one place, at any time of day.
• Reminders went only to people who hadn’t enrolled, and stopped once they did.
• You can show completion by team, location and manager on the day the window closes.

The 7 steps of an open enrollment campaign

Run this sequence backward from the day enrollment closes. Every timing below is relative to the window opening.

Step 1 (4 weeks before): Set the deadline and the groups

Fix the close date first. Then split your audience by what changes for them: full-time, part-time, new starters and anyone who isn’t eligible. Pull these groups from your HRIS so nobody is missed or counted twice.

Step 2 (3 weeks before): Write the core message once

Lead with three things: what’s changing, what each person needs to do and the date. Plan details, costs and FAQs go in a guide people can open when they’re ready. From that core, cut an email, a chat post, a text and a poster.

Step 3 (1 week before): Brief managers first

Give managers short talking points: what’s new, what their team has to do and where to send questions. A manager who hears about enrollment at the same time as their team can’t answer anything.

Step 4 (day 1): Launch on every channel at once

Send the launch on the channel each group reads: email for desk teams, Slack or Teams for people who live in chat, and text for hourly staff without a work inbox. Put a QR poster in break rooms that opens the guide on any phone. ChangeEngine’s Open Enrollment template puts plan comparisons, the deadline and a live FAQ in one place.

Step 5 (week 1): Answer questions where people ask them

Run one or two live info sessions and record them for anyone on shift. Then let people ask questions in chat or by text and get answers drawn from your plan documents, so the benefits team only handles the cases that need a person.

Step 6 (week 2 onward): Remind only the people who haven’t enrolled

Base reminders on enrollment status, not the calendar. Someone who opened the FAQ but didn’t finish needs an invite to office hours, not another copy of the launch email. Here’s how to set up open enrollment follow-ups based on opens and clicks.

Step 7 (final days): Give managers their list

A few days before the close, send each manager the names on their team who still haven’t enrolled. A quick word from a manager reaches people a fourth email won’t.

How do you write enrollment messages people finish reading?

Good enrollment messages say what to do and by when in the first line, and keep the detail one click away.

• Do open with the action and the date: “Pick your 2027 plan by November 14.” Don’t open with “We’re pleased to announce our annual benefits review.”
• Do say what changed from last year. Don’t make people read the whole plan to find out.
• Do write separate versions for groups with different options. Don’t send part-time staff details of plans they can’t choose.
• Do use AI to draft the versions, then have your benefits lead check every plan name, cost and date. Don’t send AI-drafted plan details nobody has reviewed.

Example text: “Hi Maria, open enrollment closes Friday, November 14. Your current plan is pre-filled, so confirming takes a few minutes. Questions? Reply to this text.”

How do you know your open enrollment campaign worked?

The measure that matters is completion: how many eligible people enrolled before the deadline, split by team, location and manager.

Track four things for every send: delivered, opened, clicked through to the guide, and enrolled. Then break them down by the groups you set up in step 1. A company-wide completion rate can look healthy while one site or one shift is far behind.

Track the questions too. If the same question keeps coming up, fix the guide and the next send. After the window closes, a two-question pulse (“Was it clear? Did you find what you needed?”) tells you what to change next year.

Common worries, and what to do about them

“AI-written benefits content will get something wrong.”

Treat AI as the first draft, not the final word. Let it produce the versions for each group and channel, then have your benefits lead check plan names, costs and dates. Route every send through an approval step before it goes out.

“Our hourly staff never see HR emails.”

Don’t rely on email for them. Use text messages and QR posters that open the guide on any phone, with no app and no login. Collect consent for texts first and honor opt-outs.

“Reminders annoy people.”

Reminders annoy the people who already enrolled. Send them only to people who haven’t, and stop them the moment someone completes.

Run the whole enrollment campaign from one deadline

ChangeEngine pulls the live list of people who haven’t enrolled from your HRIS, sends the campaign by email, Slack or Teams and text, and follows up only with the people who still need it.

Segments rebuild from your HRIS before every send, so anyone who completes enrollment stops getting reminders. The AI Content Studio turns one brief into the email, poster, chat post and FAQ in your brand, and can translate the whole set. The Communication Orchestrator sends each version on the right channel, timed to each person’s working hours, and automatically follows up with non-openers, switching from email to text if you choose.

The HR Knowledge Agent answers benefits questions in Slack, Teams, text or the employee hub, drawing only on the plan documents you approve and linking to the source. Anything it shouldn’t handle goes to a person on your team.