Bradford Factor
calculator.
Calculate an employee's Bradford Factor score instantly. Understand absence patterns and identify when short, frequent absences are disrupting your team.
Absence details
Each continuous period of absence counts as one spell, regardless of length.
Bradford Factor score
No concern. Normal absence levels.
Informal discussion recommended. Check for patterns.
Formal review. Consider welfare check or occupational health referral.
Formal action likely required under absence policy.
Why frequency matters
Same total days off (10), but very different Bradford Factor scores. The formula highlights that many short absences disrupt teams more than one longer absence.
The Bradford Factor is one tool among many. It should not be the sole basis for disciplinary action. Exclude disability-related absences where reasonable adjustments apply (Equality Act 2010).
Understanding the Bradford Factor
The Bradford Factor formula is simple, but knowing how to use it responsibly is what matters.
S = Spells
Count each separate period of absence as one spell. A Monday-to-Wednesday absence is one spell, not three. Only count spells within the rolling 52-week period.
D = Days
Total working days absent across all spells. Count only scheduled working days — not weekends or public holidays unless the employee was rostered to work.
B = S² × D
Squaring the spells means frequency has an outsized impact. This reflects the reality that unpredictable, repeated short absences cause more operational disruption than planned or longer ones.
Using the Bradford Factor responsibly
Do
- Use it as a trigger for supportive conversations, not punishment
- Combine with return-to-work interviews and welfare checks
- Set clear, published trigger thresholds in your absence policy
- Exclude disability-related absences and make reasonable adjustments
- Review scores in context — consider personal circumstances
Don't
- Use the score as the sole basis for disciplinary action
- Apply it blindly without considering reasons for absence
- Include absences related to disability, pregnancy, or bereavement
- Set trigger thresholds without consulting HR or legal advice
- Use it to create a culture of presenteeism
Go deeper on UK absence management
Bradford Factor questions, clearly answered
Common questions about the Bradford Factor formula, trigger bands, and how to use it fairly.
Talk to our team 01 What is the Bradford Factor?
The Bradford Factor is a formula used by HR teams to measure the impact of employee absences. It weighs frequent short-term absences more heavily than fewer long-term ones, because multiple short absences tend to cause more disruption to teams and workflows.
The formula is: B = S² × D — where S is the number of separate absence spells and D is the total days absent over a rolling 52-week period.
02 What is a good Bradford Factor score?
There's no universal standard, but common trigger bands are: 0–49 (low, no concern), 50–124 (moderate, informal discussion), 125–399 (high, formal review), and 400+ (critical, action required). Organisations set their own thresholds based on industry norms and absence policies.
03 Is the Bradford Factor legally required?
No. The Bradford Factor is a management tool, not a legal requirement. It should be used alongside other information — not as the sole basis for disciplinary action. CIPD recommends combining it with return-to-work interviews, welfare checks, and occupational health referrals.
04 Can the Bradford Factor disadvantage disabled employees?
Yes, it can. Employees with disabilities or chronic conditions may have higher absence frequencies, which inflates their Bradford Factor score. Under the Equality Act 2010 (UK) or the Disability Discrimination Act 1992 (AU), employers must make reasonable adjustments. Many organisations exclude disability-related absences from the calculation.
05 How does Leave Balance help with absence management?
Leave Balance gives managers real-time visibility into absence patterns across the team. Automated leave tracking, approval workflows, and reporting make it easy to spot trends early — without manual spreadsheets. All for a flat $10/month, unlimited employees.