The Bradford Factor: the number is only part of the absence story.
Does anyone outside of HR professionals understand what the Bradford Factor is, or what the number means? If you’re scratching your head, then you’re not alone. However, despite this lack of knowledge, the Bradford Factor is a useful mathematical formula that's used to calculate a number that indicates an employee's pattern of short-term absence.
The formula is B = S² X D
· B is the Bradford Factor Score
· S is the number of spells of absence
· D is the total number of days absent in a 52-week period
Most employees will come across the Bradford Factor on their employee dashboard within their HR system. Logging in to book holiday or to manage a period of absence, they’ll see a number telling them what their score is across a 12-month rolling period.
This is when it can get tricky, because unless you’re well versed in what it means, it can be hard to understand. Is a score of 0 good or 12? The number doesn't simply correspond to the number of days of absence; it gives greater weighting to frequent short-term absences and doesn't explain the context behind the time off. Which is where we think it needs some help. Not just for a business to understand its absence patterns more effectively, but for line managers and employees to decipher too.
It might be easy to say that, if it's misunderstood, then why is it still being used?
The issue isn't the Bradford Factor itself. The issue is what happens when the score is treated as the answer, rather than the starting point for understanding absence. Which is where we think better connected and informed absence data could be the way forward. This isn't about replacing the Bradford Factor. It's about combining a useful, established measure with better, more detailed absence information.
The Bradford Factor tells you that something might be happening with an employee. Good absence data helps you understand what is going on. By accurately capturing data at the point of absence and connecting this directly into your HRMS or another platform, you can see the exact number of days taken, the specific reasons, and departmental, seasonal and other trends. Alongside this information, the Bradford score suddenly becomes more meaningful.
It might be four separate stress-related absences, concentrated around particular days or periods, within one team. Bradford turns that into a number; structured data gives HR something they can investigate and act upon. And that's where the real value lies – spotting something earlier gives managers an opportunity to have the right conversation, understand whether support might be needed and potentially prevent a pattern of short-term absence becoming a more significant issue.
Our digital absence line, AVA, captures unplanned absence in the same, consistent way for every employee, from the moment the absence is reported. Rather than simply recording that someone is ‘sick’, AVA records more meaningful information about the reason for their absence, creating structured data that can be connected to HR systems and viewed alongside measures such as the Bradford Factor. Importantly, it also means that absence information is captured consistently at source, rather than relying on different managers recording different levels of information from phone calls, emails or messages.
This is where the combination becomes much more useful. A Bradford score might highlight that an employee has had several spells of short-term absence; AVA can provide the information behind those spells. Together, they give HR and managers something meaningful to explore and can help inform the conversations they have with employees, rather than replacing the important role of management judgement and follow-up.
Better information also creates an opportunity to provide support earlier. And this isn't only about giving the employer better data. For the employee, AVA provides a consistent and confidential way to report their absence and can signpost them to relevant NHS resources and employer-provided health and wellbeing benefits at the point they may need them. For the organisation, the resulting absence data helps identify wider patterns and provides better information to support earlier intervention.
The Bradford Factor still provides a useful trigger for conversations around absence. But AVA provides the context to ensure that the conversations are considered and productive, and not tethered to an HR script.