Bradford Factor scores & trigger points
UK · 3 calculatorsWork out a Bradford Factor score from absence spells and days, see which trigger-point tier it falls into, and understand what UK employers can and can't do with the result.
Not sure which fits? Use the full calculatorHow this calculation works
The Bradford Factor scores absence with B = S² × D, where S is the number of separate absence spells in a rolling 12 months and D is the total days lost. Squaring the number of spells is deliberate: it weights frequent short absences far more heavily than one long, planned absence, because unplanned frequency is what disrupts a team's cover and scheduling.
Trigger points are set by each employer's policy, not by statute — the 50 / 125 / 400 bands used here are common defaults, not a legal standard. Whatever thresholds you use, the Equality Act 2010 still applies: disability- and pregnancy-related absence must be treated with care, and reasonable adjustments to the trigger points may be required before any formal action.