Calculate a Bradford Factor Score
Enter absence spells (S) and total days absent (D) for your review period.
What is the Bradford Factor?
The Bradford Factor is a simple attendance metric used by many employers to measure patterns of short-term absence. It gives more weight to frequent absences than to one long absence. In other words, several separate sick days can create a much higher score than the same number of days taken all at once.
This scoring approach helps HR and managers identify potential attendance concerns early and decide when to start a supportive conversation with an employee.
How the formula works
The formula is:
- S = number of absence spells (separate occasions)
- D = total number of days absent in the period
Quick examples
- 1 spell, 10 days: 1² × 10 = 10
- 5 spells, 10 days: 5² × 10 = 250
Notice that both employees missed 10 days total, but the employee with more separate absences gets a much higher score.
Common Bradford score bands
Different companies set their own trigger points, but these ranges are often used as a guide:
| Bradford Score | Typical Interpretation | Possible Action |
|---|---|---|
| 0–49 | Low concern | Monitor normally |
| 50–124 | Early warning | Informal check-in |
| 125–399 | High concern | Formal attendance review |
| 400+ | Very high concern | Escalation based on policy |
How to use this Bradford factor score calculator
- Count the number of separate absence events in your tracking period.
- Add up the total number of days absent.
- Enter both values and click Calculate Score.
- Compare the result with your internal attendance policy thresholds.
Best practices for employers and HR teams
1) Use clear policy wording
Employees should know how absence is tracked, how scores are calculated, and what thresholds trigger action.
2) Combine data with manager judgment
A number alone cannot explain personal circumstances. Use the score as a prompt for discussion, not automatic punishment.
3) Stay legally compliant
Consider local employment law, disability accommodations, medical privacy, and protected leave rules before taking action.
4) Focus on support first
High scores can indicate burnout, stress, caregiving pressure, or unresolved health issues. Early support often works better than strict escalation.
FAQ
Is a higher Bradford Factor always bad?
Not necessarily. A high score means frequent absence patterns, but context matters. The right next step is usually a supportive review meeting.
Can this calculator be used for monthly tracking?
Yes. You can apply the same formula to any period (monthly, quarterly, 26-week, or annual), as long as your organization is consistent.
Does this replace sickness management policies?
No. It complements your attendance policy. Always align calculations with your official process and legal obligations.
Final thoughts
The Bradford Factor is a useful signal for spotting repeated short absences. Use this calculator to get a quick score, then apply policy, compassion, and common sense to any follow-up action.