Bradford Factor
Absenteeism Rate Calculator: Absenteeism Rate, Cost of Absence and Bradford Factor: This free absenteeism rate calculator works out the share of scheduled working days lost to unplanned absence in a month, quarter or year. It shows:
- the absenteeism rate and attendance rate;
- days lost per employee, and how many employees were absent at least once;
- the cost of absence in rupees;
- the Bradford Factor for one employee, which shows the impact of frequent short absences.
Absenteeism Rate Formula
This is the same measure the US Bureau of Labor Statistics calls the lost worktime rate: hours absent as a percent of hours usually worked. You can use hours instead of days.
Absenteeism Rate Example (Calculator Default)
A team of 120 employees had 26 working days in a month. Unplanned absence totalled 156 days, 38 employees were absent at least once, and a day of absence costs ₹1,200.
| Measure | Working | Result |
|---|---|---|
| Scheduled days | 120 × 26 | 3,120 |
| Absenteeism rate | 156 ÷ 3,120 × 100 | 5.00% |
| Attendance rate | 100% − 5.00% | 95.00% |
| Days lost per employee | 156 ÷ 120 | 1.3 |
| Employees absent at least once | 38 ÷ 120 × 100 | 31.67% |
| Cost of absence | 156 × ₹1,200 | ₹1,87,200 |
What Counts as Absence
| Count as absence | Do not count |
|---|---|
| Sick days and unplanned leave taken on the day | Earned or annual leave approved in advance |
| Unauthorised absence (no leave, no information) | Weekly offs and holidays |
| Half days lost (count as 0.5) | Maternity leave, lay-off and approved long leave |
| Late joining of a full shift, if your policy treats it as absence | Training, official travel or work from another site |
Whatever you include, keep the same definition every month so the trend is meaningful.
Bradford Factor Explained
The Bradford Factor scores absence so that frequent short absences weigh more than one long absence, because they are usually more disruptive. The score is S × S × D, where S is the number of separate spells of absence and D is the total days absent, usually over the last 52 weeks.
| 10 days absent taken as | Working | Score |
|---|---|---|
| 1 spell of 10 days | 1 × 1 × 10 | 10 |
| 2 spells of 5 days | 2 × 2 × 10 | 40 |
| 5 spells of 2 days | 5 × 5 × 10 | 250 |
| 10 spells of 1 day | 10 × 10 × 10 | 1,000 |
Trigger points are set by each employer's policy; there is no legal standard. The score can unfairly flag employees with health conditions or a disability, so use it to start a return-to-work conversation, not as a reason for action on its own.
Absence and Wages Under the Code on Wages
Under Section 20 of the Code on Wages, 2019, an employer may deduct wages for absence from duty, but the deduction cannot be a larger share of the wages than the absence is of the required working time. An employee who is present but refuses to work without reasonable cause is treated as absent. Work out the salary for days paid with the monthly salary calculator. Paid leave earned under the OSH Code is not absence; see the leave accrual calculator.
How to Reduce Absenteeism
- Measure by team and month: a high rate in one team often points to a manager, shift or workload issue.
- Look for patterns: absences around weekends, holidays or paydays suggest different causes from long sickness.
- Hold return-to-work conversations: a short, supportive conversation after each absence helps find the cause early.
- Support health and wellbeing: occupational health support, flexible shifts and employee assistance programmes reduce sickness absence.
- Make the leave policy clear: employees should know how to report absence and how leave is approved.
How to Use This Absenteeism Rate Calculator
- Open Team and period: enter the average number of employees and the working days in the period, excluding weekly offs and holidays.
- Open Absence: enter total unplanned days absent across all employees. Optionally add how many employees were absent at least once and the cost of one day's absence.
- Open Bradford Factor to score one employee: enter the number of spells and the total days absent.
- Read the absenteeism rate, attendance rate, days lost per employee, cost and Bradford Factor. Use Copy for your monthly HR report.
Frequently Asked Questions
How do you calculate absenteeism rate?
Divide total days absent by (average employees × working days) and multiply by 100. 156 days absent for 120 employees over 26 working days is 156 ÷ 3,120 × 100 = 5%.
What is a good absenteeism rate?
There is no single standard; it varies by industry, shift pattern and season. Track your own rate by team and month and look at the trend.
Is approved leave counted in absenteeism?
Usually not. Leave approved in advance, weekly offs and holidays are planned. Absenteeism counts unplanned absence such as sickness and unauthorised absence.
How do I calculate absenteeism rate for one employee?
Enter 1 employee. 3 days absent out of 26 working days is 3 ÷ 26 × 100 = 11.54%.
What is the difference between absenteeism rate and attendance rate?
They add up to 100%. A 5% absenteeism rate means a 95% attendance rate.
How is the cost of absenteeism calculated?
Days absent × cost of one day. Use daily wages, and add the cost of overtime or temporary cover if you pay for it. 156 days at ₹1,200 is ₹1,87,200.
What is the Bradford Factor formula?
Spells × spells × days. 4 separate absences totalling 6 days score 4 × 4 × 6 = 96.
How are half days counted?
As 0.5 day. You can also measure in hours: hours absent ÷ scheduled hours × 100.
Can salary be deducted for absence?
Yes. The Code on Wages, 2019 permits deductions for absence from duty in proportion to the period of absence. Approved paid leave is not deducted.
How often should HR track absenteeism?
Monthly, by team, with a rolling 12-month view. Report it with attrition and overtime, since they often move together.