When it comes to tracking the 12-month period for Family and Medical Leave Act (FMLA) leave, employers have four different methods to choose from: the calendar year, the fixed 12-month period (such as a fiscal year), the rolling forward method, and the rolling backward method. Each approach has its advantages and challenges, but the rolling backward method has gained significant traction in recent years.
Unlike the calendar year or fixed 12-month period, where employees may take consecutive leave at the end of one year and the start of the next, or the rolling forward method, which sets leave availability based on the first date leave is taken, the rolling backward method ensures that FMLA leave is tracked in a way that prevents abuse and maintains business continuity. During my last FMLA & ADA 2-Day Certificate Program, I have noticed a growing number of companies choosing this method, and for good reason.
The rolling backward method prevents employees from “stacking” their FMLA leave, a common issue with other tracking options. Instead of allowing an employee to take 12 weeks at the end of one calendar year and another 12 weeks at the beginning of the next, this method calculates leave based on a lookback period from the requested leave date. If an employee has already used some FMLA leave in the past 12 months, only the remaining balance is available. This approach ensures a more equitable distribution of leave and prevents extended absences that could disrupt operations.
Another key reason for this shift is improved workforce management. Employers need to maintain productivity while meeting legal obligations, and the rolling backward method provides better control over how leave is taken. Unlike the fixed calendar year or fiscal year methods, which may lead to multiple employees exhausting leave at the same time, this approach spreads out leave usage and allows companies to plan more effectively for temporary coverage and staffing needs.
Additionally, the rolling backward method is often viewed as the most cost-effective option. When employees take consecutive FMLA leave under more lenient tracking systems, businesses often experience increased overtime costs, heavier workloads for remaining employees, and potential operational slowdowns. By minimizing unexpected leave clustering, companies can reduce financial strain and improve business continuity, making this method a preferred choice for many HR teams.
From a compliance standpoint, the rolling backward method aligns with FMLA regulations and provides employers with more control while maintaining fairness for employees. The Department of Labor allows four methods for calculating the 12-month period, but this approach is the most restrictive without violating employee rights. This means that businesses can manage leave effectively while staying compliant, reducing the risk of legal disputes and ensuring consistent application of leave policies across the workforce.
With more companies realizing the benefits of this method, it’s no surprise that its usage is growing. Every time I conduct my FMLA & ADA 2-Day Certificate Program, I see a higher number of HR professionals confirming that their organizations have adopted the rolling backward method—or are strongly considering it. As workforce planning and leave management become more critical in today’s business landscape, this method offers the right balance between employee rights and operational efficiency, making it a smart choice for modern employers.
Selecting the right FMLA tracking method is a critical decision that impacts both employees and business operations. While all four methods have their place, the rolling backward method has proven to be the most effective in preventing leave abuse, improving workforce planning, and reducing financial strain. As more organizations adopt this approach, HR professionals must stay informed and prepared to implement best practices. If your company hasn’t reviewed its FMLA tracking method recently, now is the time to evaluate whether this approach is the right fit for your workforce.
Can Employers Change the 12-Month Method?
Yes, employers can change their 12-month FMLA tracking method, but they must follow specific guidelines to ensure fairness and compliance. The Department of Labor requires employers to provide employees with at least 60 days’ notice before implementing a new method. Additionally, during the transition, no employee should be disadvantaged by the change, especially if they are currently on FMLA leave. This means that if the switch would reduce an employee’s available leave during the transition period, the employer must allow them to use the greater benefit until the change is fully in effect.
Elga Lejarza
Founder & CEO
LejarzaWorkforceSolutions
