The most common errors HR teams make during enrollment season and how to avoid them.
Tips & Advice
Open Enrollment Mistakes That Cost Employers
Open enrollment is one of the most high-stakes periods in the HR calendar. A poorly managed enrollment window can result in compliance violations, employee dissatisfaction, and benefits spending that fails to deliver value. Despite its importance, many employers repeat the same avoidable mistakes year after year. Recognizing these common pitfalls and building a structured enrollment process can save significant time, money, and employee goodwill.
Starting Too Late and Rushing the Process
The most pervasive open enrollment mistake is failing to start preparation early enough. Many HR teams begin planning just four to six weeks before the enrollment window opens, which leaves inadequate time for carrier negotiations, plan design changes, communication material development, and system testing. The result is a rushed process that introduces errors, confuses employees, and leaves money on the table.
Effective open enrollment preparation should begin at least 90 to 120 days before the enrollment period opens. This timeline allows the benefits team to review the prior year performance data, evaluate renewal terms from carriers, consider plan design modifications, solicit competitive quotes where appropriate, and build a comprehensive communication strategy. Employers who compress this timeline often accept renewal terms without adequate negotiation or miss opportunities to restructure plans in ways that reduce cost while maintaining employee value.
The downstream effects of a rushed enrollment are significant. Benefit administration platforms may not be configured correctly, leading to eligibility errors that take months to resolve. Communication materials may contain inaccurate plan details, creating employee confusion and eroding trust. And HR teams, already stretched thin, experience burnout that carries over into the rest of the benefits administration year.
Underinvesting in Employee Communication
Many employers treat open enrollment communication as a checkbox exercise rather than a strategic initiative. Sending a single email with a PDF summary of plan options and a link to the enrollment portal is not an effective communication strategy. Research consistently shows that employees who do not understand their benefits are more likely to make suboptimal elections, underutilize valuable programs, and express lower satisfaction with their overall compensation package.
A multi-channel, multi-touch communication strategy is essential for driving informed enrollment decisions. This should include an initial announcement four to six weeks before enrollment opens, detailed plan comparison guides, decision support tools or calculators, live or recorded information sessions, and follow-up reminders as the enrollment deadline approaches. Different employee segments may require different communication approaches depending on their access to email, comfort with technology, and language preferences.
The most impactful enrollment communications go beyond listing plan features and premiums. They help employees understand how to evaluate their options based on their personal health situation, financial circumstances, and family needs. Scenario-based examples showing how different plan choices would affect out-of-pocket costs for common healthcare situations like a routine pregnancy, a chronic condition, or a healthy individual with minimal utilization help employees make better decisions than abstract plan comparison charts alone.
Ignoring Data from the Prior Plan Year
Employers who approach each open enrollment as a fresh start without analyzing the prior year performance data are missing critical insights. Claims utilization data, enrollment patterns, employee demographic shifts, and plan cost trends all contain valuable information that should directly inform plan design and communication strategies for the upcoming year.
For example, if claims data shows that a disproportionate share of plan costs are being driven by emergency room utilization for non-emergency conditions, the employer might consider enhancing telemedicine benefits, adding urgent care network options, or implementing an employee education campaign about appropriate care settings. If enrollment data shows that a large percentage of employees are defaulting to the highest-cost plan despite utilization patterns that suggest a lower-tier option would serve them better, targeted decision support tools can address this misalignment.
Working with your benefits advisor to conduct a thorough plan year review well in advance of the renewal cycle ensures that you are making data-driven decisions rather than relying on assumptions. This analysis should include cost trending by category, high-cost claimant impact, utilization of preventive services, pharmacy benefit patterns, and employee satisfaction feedback. The insights generated from this review form the foundation of an effective renewal strategy.
Overlooking Compliance Requirements
Open enrollment triggers a number of compliance obligations that employers overlook at their peril. ERISA requires that summary plan descriptions be distributed to participants, and material modifications to plan terms must be communicated through a summary of material modifications at least 60 days before the effective date for reductions in benefits. ACA mandates require that applicable large employers provide written notice of exchange availability and offer coverage that meets minimum value and affordability standards.
Section 125 cafeteria plan documentation must be updated to reflect any changes in pre-tax election options, and the plan document must define the enrollment period, permitted election changes, and qualifying life events. Failure to maintain a compliant Section 125 plan document can result in the IRS disqualifying pre-tax elections retroactively, creating tax liability for both the employer and affected employees.
HIPAA special enrollment rights must be honored for employees who experience qualifying life events outside the regular enrollment window, and Medicare Part D creditable coverage notices must be distributed annually before October 15. The administrative complexity of these overlapping requirements makes a compliance checklist and calendar essential tools for any HR team managing open enrollment. Working with a benefits advisor who tracks regulatory changes and provides compliance support can significantly reduce the risk of costly oversights.
Failing to Evaluate the Full Benefits Package
Many employers focus exclusively on medical plan design and cost during the open enrollment cycle while neglecting the rest of the benefits portfolio. Dental, vision, life, disability, voluntary benefits, retirement plans, and wellness programs all deserve regular evaluation to ensure they remain competitive, cost-effective, and aligned with employee needs.
Voluntary benefits in particular represent an opportunity that many employers underutilize. Products like accident insurance, critical illness coverage, hospital indemnity plans, and identity theft protection can be offered at no direct cost to the employer while providing employees with valuable financial protection. The enrollment period is the ideal time to introduce new voluntary options or refresh existing ones, but this requires advance planning and dedicated communication that many employers skip when they are focused solely on the medical plan renewal.
Retirement plan provisions should also be reviewed annually in conjunction with the benefits enrollment cycle. Changes introduced by the SECURE 2.0 Act, including expanded automatic enrollment requirements, new Roth options, emergency savings provisions, and student loan matching, create both obligations and opportunities for employers. Integrating retirement plan updates into the broader enrollment communication strategy reinforces the total value of the compensation package and helps employees see the full picture of what their employer provides.
FAQ
Get Started
Tell Us About Your Team and Let's Build Better Benefits
Share a few details about your organization and our employee benefits specialists will reach out with a customized benefits strategy. No obligation — just expert guidance from a team that understands workforce management.
Ready to Elevate Your Benefits?
Our benefits specialists design programs that attract talent and protect your team. Let us build a package that works for your organization.