Bradford Factor
Calculate Bradford Factor score using total absence days and number of absence periods. Free HR attendance monitoring tool with instant results, breakdowns, and charts.
About This Calculator
The Bradford Factor Calculator helps HR professionals and managers measure employee absenteeism patterns using the widely-adopted Bradford formula. By analyzing both the frequency and duration of absences, this tool identifies employees whose absence patterns may negatively impact workplace productivity and team performance.
The Bradford Factor formula is B = S² × D, where S is the number of absence periods (instances or spells of absence) and D is the total number of days absent during the review period. Unlike simply counting total absence days, the formula squares the number of periods to penalise frequent short-term absences which tend to be more disruptive to business operations than longer planned absences.
For example, an employee absent for 20 days across 10 separate periods scores B = 10² × 20 = 2,000, while another employee absent for the same 20 days but in only 2 periods scores B = 2² × 20 = 80. This illustrates how frequent short absences have a much greater Bradford Factor impact.
Score Interpretation Guide
0 – 50 (Low): Acceptable absence level. 51 – 200 (Medium): Monitor the employee pattern. 201 – 400 (High): Formal review and management intervention recommended. 401+ (Very High): Escalate to HR for action planning.
Regional Notes
India: Indian HR departments use the Bradford Factor alongside the Factories Act and standing orders for attendance management. The standard review period aligns with the April–March financial year.
United States: US employers use the Bradford Factor under FMLA and ADA compliance frameworks. It is commonly integrated with HRIS systems for quarterly absence tracking.
United Kingdom: The Bradford Factor originated from Bradford University and is widely used in UK HR management. ACAS guidelines recommend using it as an indicator, not a sole disciplinary tool.
Frequently Asked Questions
What is the Bradford Factor formula?
The Bradford Factor is calculated using the formula B = S x S x D where S is the number of absence periods (spells or instances of absence) and D is the total number of days absent in the reviewed period, typically 52 weeks.
What is a good Bradford Factor score?
A good Bradford Factor score is 50 or below. Scores between 51 and 200 indicate medium risk, 201 to 400 indicate high risk, and anything above 400 is considered very high risk meriting management attention.
How does the Bradford Factor differ from total absence days?
Unlike total absence days which only measure how many days an employee is away, the Bradford Factor penalises frequent short absences by squaring the number of absence periods. An employee with many short absences can have a higher score than one with fewer long absences even if total days are the same.
Can I share my calculation results?
Yes, the URL automatically saves your input values so you can bookmark or share the exact calculation with colleagues and HR managers.
What period should I use for the Bradford Factor?
The standard review period for the Bradford Factor is 52 weeks or one financial year. This aligns with annual HR reporting cycles in India, the United States, and the United Kingdom.
Is the Bradford Factor used worldwide?
Yes, the Bradford Factor is used by HR departments globally including in India, the United States, and the United Kingdom. It originated from Bradford University School of Management in the UK and has been adopted internationally as a standard absence measurement tool.
What are the limitations of the Bradford Factor?
The Bradford Factor does not account for the reason behind absences such as genuine medical conditions, family emergencies, or long-term illnesses. It should be used alongside qualitative HR assessments and not as the sole metric for disciplinary action.