What Is the Bradford Formula?
The Bradford Formula (also called the Bradford Factor) is a statistical method used in absence management to measure the impact of employee absenteeism, giving disproportionately higher weight to frequent, short, unplanned absences compared to a single long absence of the same total duration — based on the premise that frequent short absences are more disruptive to team operations.
The Bradford Factor Formula
Bradford Factor Score = S² × D, where S is the number of separate absence instances (spells) in a defined period, typically 52 weeks, and D is the total number of days absent across those instances.
Worked Example
An employee with 1 absence spell totaling 10 days scores 1² × 10 = 10. An employee with 10 separate 1-day absence spells (also totaling 10 days) scores 10² × 10 = 1,000 — illustrating how the formula penalizes frequent, unpredictable absence far more heavily than a single extended absence, even though the total days lost are identical.
Why HR Teams Use the Bradford Factor
- Helps distinguish genuinely disruptive absence patterns from occasional, legitimate longer absences (such as a planned medical procedure).
- Provides an objective, data-driven trigger point for initiating supportive conversations or, where needed, formal absence management procedures.
- Useful for identifying employees who may benefit from wellness support, flexible work arrangements, or closer engagement follow-up.
Important Caution When Using the Bradford Factor
The score should be used as a starting point for a supportive conversation, not as an automatic trigger for disciplinary action — genuine underlying issues such as chronic health conditions, caregiving responsibilities, or mental health challenges should always be explored sensitively before any formal process begins.
Bradford Formula: Frequently Asked Questions
Is the Bradford Factor legally recognized or required in India?
What Bradford Factor score is considered concerning?
This glossary entry is for general information and reflects common HR practice in India at the time of writing. Statutory thresholds, rates and deadlines change — verify against the latest official notifications or consult a qualified legal or tax advisor before acting.