Absence Rates Rate Calculator
Calculate your employee absence rate from total absence days, employee headcount and working days in the measurement period.
Overview
This absence rate calculator estimates the percentage of scheduled working time lost to employee absence. Enter total absence days, the average number of employees and the number of working days in your chosen reporting period.
How it works
The calculator first finds the total available working days by multiplying the average employee count by the working days per employee. It then divides total absence days by that figure and multiplies by 100. For example, 78 absence days across 30 employees each scheduled for 260 days gives 7,800 available working days and an absence rate of 1%.
How to use this calculator
- 1Enter the total working days lost to absence during the period.
- 2Enter the average number of employees in the workforce.
- 3Add the scheduled working days per employee for the same period.
- 4Review the absence rate and average days lost per employee.
- 5Use the same definitions and period length when comparing results.
Example Calculation
Total absence days
780
Average number of employees
120
Working days per employee
260
Absence rate
2.50%
With 780 absence days, 120 employees and 260 working days per employee, the absence rate is 2.50%. This equals an average of 6.5 absence days per employee.
Frequently asked questions
How is an absence rate calculated?
Divide total working days lost to absence by total available working days, then multiply the result by 100.
What counts as total available working days?
It is the average number of employees multiplied by the scheduled working days per employee in the reporting period.
Should annual leave be included in absence days?
Normally, planned annual leave is excluded because it is not unplanned absence. Use your organisation's reporting definition consistently.
How do I calculate absence for part-time employees?
Adjust scheduled working days to reflect each employee's actual work pattern, then include those adjusted days in the total available working days.
Can I use this calculator for a month or quarter?
Yes. Enter absence days, average headcount and scheduled working days for the same monthly, quarterly or annual period.
Why use an average employee count?
An average headcount can give a more representative result when employees join or leave during the reporting period.
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Assumptions and warnings
Assumptions
- The calculation uses absence days as working days lost, rather than calendar days.
- Each employee is assumed to have the same number of scheduled working days in the period.
- The average employee count represents the workforce during the reporting period.
- The result is a descriptive measure and does not indicate the causes or impact of absence.
Warnings
- Use consistent absence definitions and reporting periods when comparing results between teams or over time.
- Part-time patterns, new starters and leavers can affect results if working days are not adjusted accurately.