Measure unplanned absence across your team. Enter headcount, scheduled workdays and days lost to get the absenteeism rate, hours lost and what absence costs per period and per year, plus a Bradford factor score for one employee.
Last updated:
Absence rate
days
For example about 21 for a month, 63 for a quarter, 250 for a year.
days
Sum across all employees. Exclude approved vacation, holidays and planned leave.
h
Cost of absenteeism
$
% of pay
$
Overtime premium, temp staff or agency cost to cover one lost day. 0 if work simply waits.
Untick if absent days are unpaid; only the cover cost is then counted.
days
Bradford factor (one employee)
Each unbroken run of absence counts as one spell.
days
Enter your values to see the result.
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How to use the Absenteeism Rate Calculator
Enter the number of employees and the scheduled workdays per employee in the period.
Enter the total days lost to unplanned absence across everyone.
Add pay and cover costs to see what absence costs the business.
Optionally enter spells and days for one employee to get a Bradford factor.
Press Calculate absenteeism to see the rate, cost, projection and tables.
Absenteeism formulas
Absenteeism rate = days lost ÷ (employees × scheduled workdays) × 100
Hours lost = days lost × hours per day
Cost of absence = hours lost × hourly pay × (1 + benefits %) + days lost × cover cost per day
Bradford factor = S² × D (spells squared × total days absent)
Example: 50 employees each scheduled for 21 days gives 1,050 scheduled days. With 32 days lost, the absenteeism rate is 32 ÷ 1,050 = 3.05%. At 8 hours a day that is 256 hours; at $26 an hour plus 30% benefits ($33.80) and $60 of cover per day, the month costs about $8,653 + $1,920 = $10,573.
Bradford factor examples
Absence pattern (last 52 weeks)
Spells (S)
Days (D)
Score S² × D
One 10-day absence
1
10
10
Two 5-day absences
2
10
40
Five 2-day absences
5
10
250
Ten 1-day absences
10
10
1,000
Three 2-day absences
3
6
54
Trigger points are set by each employer's absence policy; there is no official threshold.
Tips for reducing absenteeism
Record absence consistently: same definitions, same units (days or hours), every team.
Hold return-to-work conversations after each absence to spot problems early.
Look for patterns such as Mondays, specific shifts or one department, which often point to fixable causes like scheduling or workload.
Frequently asked questions
What is the absenteeism rate formula?
Absenteeism rate = days lost to absence ÷ total scheduled workdays × 100, where total scheduled days = number of employees × workdays in the period. For example, 32 days lost by 50 employees over 21 workdays is 32 ÷ 1,050 = 3.05%.
Which absences should be counted?
Count unplanned absence: sickness, unauthorized absence and short-notice personal days. Leave out approved vacation, public holidays, jury duty and planned long-term leave, otherwise the rate mixes normal time off with the absence you are trying to manage.
What is a good absenteeism rate?
There is no single standard. Rates vary by industry, shift work and how sick leave is recorded. In the US, Bureau of Labor Statistics data has typically shown full-time absence rates around 3%. Track your own trend and compare similar teams.
How is the cost of absenteeism calculated here?
If absences are paid, lost hours are multiplied by hourly pay plus benefits. Any extra cost to cover the work, such as overtime premium or temp staff, is added per lost day. The annual figure scales the period cost by workdays per year.
What is the Bradford factor?
The Bradford factor is B = S² × D, where S is the number of separate absence spells and D is the total days absent, usually over a rolling 52 weeks. Squaring the spells makes frequent short absences score higher than one long absence: 10 one-day absences score 1,000, while one 10-day absence scores 10.
Should the Bradford factor be used to discipline staff?
It is a prompt for a conversation, not a verdict. Employers set their own trigger points and should exclude absences protected by law, such as disability-related or family and medical leave, and treat each case fairly.
Are all the tools on FreeToolCabin tested for quality and accuracy?
Yes! Every tool on our site undergoes automated Q/A testing in real browser environments to ensure high precision, correct output, and zero errors. If you happen to spot a bug or have a suggestion, please contact us at [email protected] and our team will review it right away.