Every benefits admin knows open enrollment season brings one universal headache: getting employees to actually read, understand, and act on your communications. A clear Open Enrollment Sample Letter to Employees can cut through inbox clutter, reduce repeat questions, and boost completion rates by 30% or more for most teams.

This guide breaks down exactly what works, shares ready-to-use letter templates for every scenario, and walks you through common mistakes to avoid. Whether you run a small startup or large corporate team, you’ll find usable examples here you can adapt this week.

Why A Well-Written Open Enrollment Letter Makes All The Difference

Most companies send generic open enrollment notices that get deleted within 3 seconds. Your letter isn’t just a legal requirement—it’s the first touchpoint that helps your team make smart choices about their health, finances, and family support this year.

Employees don’t ignore benefits—they ignore confusing, unhelpful communications that don’t speak to their actual lives.

Before you draft any letter, align it around these core must-have details:

  • Exact start and end dates for enrollment window
  • Who is eligible to make changes
  • 3 simple action steps required
  • Contact information for support questions

Track common pain points from last year to prioritize information. For reference, here’s what employees actually look for first:

Employee Priority % Who Check This First
Premium rate changes 72%
Enrollment deadline 18%
New benefit options 10%

Open Enrollment Sample Letter to Employees: Initial 30-Day Advance Notice

Subject: Mark Your Calendars: 2025 Benefits Open Enrollment Starts October 15

Hi Team,

Our annual benefits open enrollment window will run from Wednesday October 15 through Wednesday October 29, 2025. This is your only chance to update health insurance, dental, vision, retirement contributions and wellness benefits for next year.

You will receive your personalized benefit packet via email on October 10. Schedule 15 minutes on your calendar during this window to review your options. No changes will be accepted after 5PM on October 29.

Thank you,
HR Team

Open Enrollment Sample Letter to Employees: Reminder 7 Days Before Deadline

Subject: REMINDER: 7 Days Left To Complete Your Open Enrollment

Hi Everyone,

Just a friendly heads up: we have 7 days remaining in this year’s open enrollment period. As of today, 42% of the team has not yet submitted their selections.

If you take no action, your current benefits will automatically roll over for 2025. Note that this does not apply to flexible spending accounts—you must re-enroll in these every year.

Log into the benefits portal now to complete your selections in 5 minutes or less.

Regards,
Benefits Administration

Open Enrollment Sample Letter to Employees: New Hire First Enrollment Notification

Subject: Your First Open Enrollment: What You Need To Know

Hello [Employee Name],

Welcome to the team! As a new hire, you are eligible to enroll in company benefits during this open enrollment window, even if you completed your initial new hire benefits selection earlier this year.

This is your one opportunity to add or adjust coverage before next year. We have scheduled a 15 minute 1:1 walkthrough for all new hires this Thursday—check your calendar for the invite.

Reach out to hr@company.com anytime with questions.

Open Enrollment Sample Letter to Employees: Virtual Info Session Invitation

Subject: Join Us: Open Enrollment Live Q&A Session Next Tuesday

Hi Team,

We are hosting a 45 minute live virtual info session to walk through all 2025 benefit changes, demo the enrollment portal, and answer any questions you may have.

The session will be held Tuesday October 7 at 2PM. A recording will be posted to the company intranet within 1 hour after the session ends for anyone who cannot attend live.

You can submit questions anonymously ahead of time using the form linked in your calendar invite.

Open Enrollment Sample Letter to Employees: Final 24 Hour Deadline Reminder

Subject: LAST CALL: Open Enrollment Closes Tomorrow At 5PM

Hello Team,

This is your final reminder: open enrollment will close tomorrow, October 29, at 5PM sharp. No extensions will be granted for any reason.

As of this morning, 21% of employees have not submitted their selections. The benefits portal is running smoothly, and most people complete their enrollment in under 4 minutes.

Don’t wait until the last minute. Submit your choices today.

Open Enrollment Sample Letter to Employees: Post-Enrollment Confirmation Notice

Subject: Your 2025 Benefits Enrollment Is Confirmed

Hi [Employee Name],

Thank you for completing your open enrollment selections for 2025. This email confirms that we have received and processed your benefit choices successfully.

You can view and download your official benefit confirmation statement through the employee portal now. New benefit plans will go into effect January 1, 2025.

Keep this email for your records. Contact HR if you spot any errors within 7 business days.

Open Enrollment Sample Letter to Employees: Remote Team Specific Notification

Subject: Open Enrollment Info For Our Remote & Distributed Team Members

Hello Remote Team,

We know accessing benefit support looks different when you work outside the office. This year, we have scheduled dedicated after-hours support slots for remote employees in all time zones.

You can book a 1:1 benefits call with our team any time between 8AM and 8PM local time during the enrollment window. All benefit documents are available as fully mobile-friendly downloads.

No question is too small—please reach out anytime.

Frequently Asked Questions about Open Enrollment Sample Letter to Employees

When should I send the first open enrollment letter?

Send your initial notice 30 full calendar days before the enrollment window opens. This gives employees time to review materials and ask questions before selections begin.

Should I send letters via email or physical mail?

Email is recommended for most teams, as it gets faster delivery and allows direct links to the enrollment portal. Send physical mail only for employees who do not have regular work email access.

How many reminder letters should I send?

Most teams see the best completion rates with 4 total communications: initial notice, 2 week reminder, 7 day reminder, and 24 hour final reminder. Avoid sending more than one message per week.

Can I use the same letter every year?

You can keep a base template, but always update dates, premium changes, new benefits, and support contact info annually. Employees will notice generic outdated content and disengage.

What is the most important information to include?

Always lead with the enrollment deadline, clear action steps, and premium rate changes first. Burying this information at the end of the letter will dramatically increase follow up questions.

Should I include legal fine print in the letter?

Include required legal disclosures at the end of the letter, separated from the main employee-facing content. Use a separate link to the full official policy document for full compliance.

Do I need to send letters to part time employees?

Send a simplified letter to all employees who are eligible for any company benefits. Clearly state their eligibility status right at the top of the message to avoid confusion.

How long should an open enrollment letter be?

Keep standard letters under 300 words. Employees will not read long multi-page messages. Link to separate detailed documents for anyone who wants more information.

Can I add personalization to enrollment letters?

Yes, add the employee’s name and their current plan summary if possible. Even small personalization increases open rates and engagement with enrollment communications significantly.

Open enrollment doesn’t have to be a stressful season full of missed deadlines and repeated questions. Using the right Open Enrollment Sample Letter to Employees templates removes guesswork, keeps your team informed, and helps everyone make the best choices for themselves and their families.

Pick the templates that fit your team’s schedule, adjust the dates and details for your company, and send your first notice this week. You can save these templates for next year to make every future open enrollment run smoother than the last.