When an employee is out on leave, their pay can be difficult to calculate. Mistakes are both common and costly. Errors can result in overpayment and penalties. They can also create costs that never feature on a balance sheet but show up in attrition and trust.
While distinct, these outcomes stem from the same root cause: It’s extremely difficult to calculate leave pay correctly by hand. In this article, we’ll examine why it’s so hard to determine an employee’s pay while they’re out on leave, the leave payroll costs to consider, and the tools that can eliminate risk and error-proof your approach to payroll.
Why Leave Pay Is So Hard to Get Right
Every leave case can involve overlapping federal, state, and company policies. Each of these policies comes with its own rules that regulate how your company pays employees who are out on leave. When these rules intersect, as they often do, your team is left with a payroll puzzle.
For example, your team needs to be prepared to manage state benefits, like paid family leave, disability insurance, and temporary disability insurance. These policies must be sequenced correctly against company-paid wage replacement.
When mistakes arise, your organization risks more than simple paperwork errors. Leave payroll calculation costs resulting from errors are numerous and significant. Employees could see overpayment or underpayment. Each possibility comes with its own business impact.
To learn how you can set up reliable payment processes, read our article: Leave of Absence Pay and How to Get It Right.
The Cost of Payroll Errors: Explained
Let’s dig into the costs associated with leave payroll errors, starting with overpayment.
When an employee takes leave, they may receive benefits from the state. Employers that pay full wages on top of this benefit end up submitting a leave pay overpayment. Instead of paying the differential, which would close the gap between the state-provided benefit and the employee’s full pay, they send a complete paycheck.
It’s unlikely that employers can recover an overpayment of this nature. This mistake, made once or twice, won’t impact a budget. But if an organization overpays employees on leave at scale, it could see significant funds wasted.
Payroll Compliance, Leave Management: Top Costs
For most businesses, the cost of penalties poses a larger threat than overpayments. Because wage calculation rules vary state by state, multi-state payroll compliance creates intense confusion for HR teams. Here are a few examples to consider:
- California requires careful state disability insurance and paid family leave wage coordination. Failing to report wages correctly can trigger overpayment, penalties, and even benefit disqualification for the employee.
- New York recently limited damages for first-time “manual worker” pay frequency violations to lost interest. But repeat violators can still face liquidated damages equal to 100% of underpaid wages. This update serves as a reminder that these rules shift fast.
- New Jersey reduces temporary disability insurance (TDI) or family leave insurance (FLI) benefits when employer pay overlaps. It pays no state benefit at all if the employee is receiving full salary continuation, so mis-sequenced pay is a common overpayment trap.
- Washington reduces PFML benefits for any overlapping pay unless the employer specifically designates it as a “supplemental benefit,” and the state is adding penalties and interest for late reporting starting August 2026.
Don’t Forget The Human Cost
In addition to overpayments and penalties, employers need to pay attention to the human cost of payroll mistakes. Leave of absence pay mistakes are incredibly common. According to an AbsenceSoft survey, 44% of employees reported issues or confusion with pay and benefits during leave.
These problems have a significant impact on how an employee views their time off. Nearly a third of employees (31%) who had a poor leave experience cited pay miscalculation as a factor in AbsenceSoft’s Leave and Accommodations Employee Experience Report.
Employees going out on leave need to know how they’ll be paid. Then, their experience needs to match their expectations. The employer-employee relationship quickly sours when employees receive unreliable information about their pay, or when their pay doesn’t align with their expectations.
It’s worth noting that correct pay can contribute to a positive leave experience. More than half of employees (53%) who had a good experience credited accurate pay as a key factor.
These costs, though different in nature, share the same roots. Pay errors often stem from poor state disability wage coordination and the complexity of overlapping regulations. But the details of this coordination differ in every state, which is why errors are so common. Proper coordination is too complicated for manual, spreadsheet-based tracking. For multi-state employers, purpose-built technology is the only way to achieve correct coordination consistently.
Where Manual Processes Break Down
Manual processes show up frequently in the leave management process. In many cases, HR teams have been asked to make complicated calculations based on dense guidance all on their own. Technology was either unavailable or inaccessible.
A DIY approach may have sufficed for a time, but today’s leave law landscape makes manual processes both time-consuming and risky. Here’s where they tend to break down:
- Coordinating state benefits. Sequencing state pay ahead of company wage replacement is the most common place overpayment happens.
- Multi-state workforces. 26% of HR leaders in our 2026 State of Leave and Accommodations report cited managing state leave policies across a distributed workforce as an active challenge.
- Short-term disability coordination. Manual tracking almost always produces errors where short-term disability, FMLA, and state leave intersect.
How To Improve Your Payroll Process With Automation
For most HR departments, manual pay calculation isn’t sustainable. The approach leaves you focused on math and regulations, when you need to pay attention to the employees who need your support.
Manual processes also come with other costs, from overpayments and penalties to employee frustration and turnover. Any of these can impact your organization’s bottom line. By swapping your manual methods for a purpose-built platform with intelligent automation, you can reduce the cost of leave management errors while improving the employee experience.
Employers don’t have to settle for manual payroll processes anymore. Organizations can now leverage automation to minimize errors and maximize efficiency.
ACE Leave Payroll Calculations With AbsenceSoft
With AbsenceSoft’s new Payroll Calculations module, for example, HR and payroll teams can automatically estimate leave payments, coordinate state benefits, and export data from one centralized platform.
Our platform pulls in employee’s pay history instead of flat-rate estimates, for more accurate results. Then, we apply state benefit offsets. This process results in fewer errors and real cost savings.
The Payroll Calculations module also provides per-pay-period visibility. Users can view company-paid and state-paid amounts side by side. By ensuring that employees receive their entitled state benefits first, employers’ reduce wage replacement costs and avoid unnecessary full-wage payments.
Our platform also features one-click payroll export. This cuts out manual data entry and transcription errors. By eliminating manual math and enhancing datasets, your team will see fewer mistakes and reduced cost.
To learn more about how AbsenceSoft can improve your approach to payroll, leave management, and more, check out our resource library today.