The Impact of Leaves of Absence on ACA Tracking

Leaves of absence can create challenges for employers when managing Affordable Care Act (ACA) compliance. Because ACA eligibility is tied to hours of service and employee status, leaves can affect how employers determine full-time status, maintain coverage, and complete accurate reporting. Understanding how different types of leave are treated is important to avoid gaps, errors, and potential compliance issues.

Why Leaves of Absence Matter

ACA compliance depends on accurate tracking of employee hours and eligibility. When an employee goes on leave, their hours may decrease or stop entirely, which can affect full-time determinations. Without proper handling, this can lead to incorrect coverage decisions or reporting inconsistencies.

The impact of a leave depends on both the type of leave and the measurement method the employer uses to determine full-time status.

Types of Leave and Hours of Service

Not all leaves are treated the same under ACA rules.

• Paid leave, such as vacation, sick time, or PTO, generally counts as hours of service. These hours continue to be included when determining eligibility.
• Unpaid leave typically does not count as hours of service. This can lower an employee’s average hours during a measurement period.
• Protected unpaid leave, such as FMLA, USERRA, or jury duty, must be treated differently. Employers are required to ensure that employees are not disadvantaged in eligibility determinations due to these types of leave, often by adjusting how hours are calculated during the leave period.

Properly identifying and tracking the type of leave is a key step in maintaining accurate ACA records.

Monthly Measurement Method vs. Look-Back Measurement Method

How a leave affects ACA eligibility depends largely on which measurement method the employer uses.

Employers using the monthly measurement method determine full-time status each month based on hours worked during that specific month. Under this approach, unpaid leave can directly impact eligibility. If an employee does not meet the full-time threshold in a given month due to unpaid leave, the employer may not be required to treat that employee as full-time for that month. This makes accurate monthly tracking especially important.

Employers using the look-back measurement method evaluate employee hours over a defined measurement period and then lock in eligibility for a subsequent stability period. Under this method, once an employee is determined to be full-time for a stability period, they generally retain that status during the entire stability period, even if they go on leave and their hours decrease.

However, leaves during the measurement period can still affect future eligibility. Unpaid leave may reduce average hours, while protected leave must be handled carefully to ensure the employee is not penalized in the calculation.

Coverage During Leave

Leaves of absence can also affect how coverage is maintained. In many cases, employees on leave may continue their benefits, but payroll deductions may no longer be available. This often requires a shift to direct billing or alternative payment arrangements.

If payments are missed or delayed, coverage may terminate, which can create both employee and administrative challenges. Coordination between HR, payroll, and benefits administration is important to ensure that coverage and billing remain aligned during leave periods.

Reporting Considerations

Leaves of absence can impact ACA reporting on Form 1095-C. Employers must ensure that each month is coded correctly based on the employee’s status, hours, and coverage.

Common issues include:

• incorrect coding for months with no hours
• gaps in reported coverage
• inconsistencies between hours worked and coverage offered

Even when coverage continues during a leave, the reporting must accurately reflect the employee’s status for each month.

Best Practices for Employers

To manage ACA compliance effectively during leaves of absence, employers should:

• Clearly track and distinguish between types of leave
• Ensure timely communication of leave status changes across HR, payroll, and benefits systems
• Review how leave impacts measurement calculations and eligibility
• Monitor coverage and billing processes during leave periods
• Validate data before ACA reporting to confirm accuracy

Supporting Accurate ACA Tracking

Leaves of absence are a normal part of workforce management, but they introduce complexity into ACA tracking. By understanding how different types of leave are treated and how measurement methods affect eligibility, employers can reduce errors and maintain consistent compliance.

BAS supports employers by providing structured processes for managing enrollment, billing, and data used for ACA reporting. If you would like more information about BAS’ ACA data collection and reporting services, please contact BAS at solutions@basusa.com or 1-888-945-5513.

Benefit Allocation Systems (BAS) provides best-in-class, online solutions for: Employee Benefits Enrollment; COBRA; Flexible Spending Accounts (FSAs); Health Reimbursement Accounts (HRAs); Leave of Absence Premium Billing (LOA); Affordable Care Act Record Keeping, Compliance & IRS Reporting (ACA); Group Insurance Premium Billing; Property & Casualty Premium Billing; and Payroll Integration.

MyEnroll360 can Integrate with any insurance carrier for enrollment eligibility management (e.g., Blue Cross, Blue Shield, Aetna, United Health Care, Kaiser, CIGNA and many others), and integrate with any payroll system for enrollment deduction management (e.g., Workday, ADP, Paylocity, PayCor, UKG, and many others).

This article is for informational purposes only and is not intended as legal, tax, or benefits advice. Readers should not rely on this information for taking (or not taking) any action relating to employment, compliance, or benefits. Always consult with a qualified professional before making decisions based on this content.