About the Absenteeism Rate Calculator
This absenteeism rate calculator measures how much scheduled work time is lost to unplanned absence. Enter the number of employees, the working days in the period and the total days of absence. It returns the absence rate, the days lost per employee, the hours lost, and an estimate of what that absence costs once wages, benefits and overhead are included.
HR teams, operations managers and small business owners use the absence rate to spot problems early, compare departments and track whether wellbeing or attendance policies are working. Because the result is a percentage of scheduled time, teams of different sizes, and different periods, can be compared fairly. The calculator also annualises the figures so a monthly or quarterly snapshot can be read as a yearly cost.
Count only unplanned absence such as sickness, unauthorised absence and short-notice personal days. Leave out approved holiday, public holidays, parental leave and other planned leave, because including them would overstate absenteeism. The cost figure is a direct-cost estimate. It leaves out indirect effects such as overtime cover, lower output or missed deadlines, so the real cost is often higher.
With the default inputs, the absenteeism rate is 3%. Change any value above to recalculate instantly.
How to use the absenteeism rate calculator
- 1Enter the average number of employees in the period.
- 2Enter the scheduled workdays in that period, such as 21 for a month.
- 3Add up all unplanned absence days and enter the total.
- 4Enter average daily pay and a benefits loading to estimate cost.
- 5Read the absence rate and the annualised cost, and compare teams or periods.
Formula and method
The absenteeism rate is the share of scheduled working time lost to unplanned absence. The scheduled time is the number of employees multiplied by the workdays in the period, and the days absent are the total person-days missed. The same formula works in hours: hours absent divided by scheduled hours. That is how the US Bureau of Labor Statistics computes its lost worktime rate (hours absent as a percentage of hours usually worked). The separate BLS "absence rate" is the share of workers who had an absence in the survey week, so it is not directly comparable with this figure.
The cost estimate multiplies the days lost by average daily pay, then adds a loading for employer benefits, payroll taxes and overhead, because those costs carry on whether or not the person is at work. Annualised figures scale the period results by the workdays per year divided by the workdays in the period, which assumes the same absence pattern all year.
- days absent
- Total unplanned absence days across all employees
- employees
- Average number of employees in the period
- scheduled workdays
- Working days each employee was expected to work
- loading
- Benefits and overhead as a percentage of pay
Worked examples
One month for a 100-person company
Sixty-three absence days out of 100 × 21 = 2,100 scheduled days is a 3.0% absence rate. At $250 a day plus a 30% loading the month's absence costs 63 × $250 × 1.3 = $20,475. Scaled to 260 workdays that is about $253,500 a year, or 7.8 days per employee.
Small business over a full year
Twenty-five staff scheduled for 250 days each gives 6,250 person-days. With 150 days lost, the absence rate is 2.4%, or 6 days per person. At $180 a day with a 25% loading, absence cost $33,750, which is $1,350 per employee.
Warehouse team with high absence in a quarter
There were 151.2 days lost from 40 × 63 = 2,520 scheduled days, a 6% absence rate, more than three times the 1.7% US lost worktime rate. At 10-hour shifts that is 1,512 hours lost, and at $200 a day plus a 35% loading it cost $40,824 in the quarter.
Frequently asked questions
How do you calculate absenteeism rate?+
Divide the total days (or hours) of unplanned absence by the total scheduled days (or hours) for all employees, then multiply by 100. For example, 63 days absent out of 100 employees × 21 workdays = 63 ÷ 2,100 = 3%.
What is a normal absenteeism rate?+
For US full-time wage and salary workers in 2025, the BLS lost worktime rate (hours lost to absence as a share of usual hours) was 1.7%, the measure that matches this calculator. Its separate absence rate, the share of workers with an absence in a given week, was 3.2%. Rates vary between occupations and industries, so compare with your own sector and history.
Should holidays and vacation be counted as absence?+
No. Absenteeism measures unplanned absence such as sickness, unauthorised absence and short-notice personal days. Approved vacation, public holidays, jury duty and parental leave are planned, and including them would make the rate look much worse than it really is.
How do I estimate the cost of absenteeism?+
Multiply days lost by average daily pay, then add the benefits and overhead that carry on during the absence, often 25–40% of pay. That gives the direct cost. Overtime cover, temporary staff, lost sales and manager time come on top, so treat the result as a minimum.
What is the difference between absence rate and the Bradford Factor?+
The absence rate measures the total time lost across a team. The Bradford Factor scores an individual's absence pattern, giving more weight to frequent short absences than to one long one. Many HR teams use the rate for reporting and the Bradford Factor as an individual trigger.