Absence rate
The share of scheduled working time lost to absence.
01 What it is
Why anyone looks at this number
The share of scheduled working time lost to absence.
In operations it converts directly into overtime, agency cover and missed schedules. It is also an early indicator of the conditions that later produce attrition.
02 The formula
How it is worked out
Absence rate = days_absent ÷ scheduled_working_days grain : month × site × shift unit : percentage source : Time and attendance, joined to the HR system
Separate short-term from long-term absence. One long-term case can double a site rate and needs a completely different response from a pattern of single days.
03 Worked example
The same number, with real inputs
| Absence days | 1,590 |
| Scheduled days | 63,600 |
| Calculation | 1,590 ÷ 63,600 |
| Result | 2.5% |
2.5% is about 6.6 FTE of permanent cover. If that is filled by agency at a premium, the absence line is understating the real cost by a wide margin.
04 What moves it
Four things that actually change this number
Shift pattern
Fatigue and unsociable hours show up here first.
Physical conditions
Heat, noise, manual handling.
Management practice
Return-to-work conversations change short-term absence quickly.
Seasonal illness
Predictable, and worth planning cover for rather than reacting to.
05 Where the number lives
The system, the record and the fields
| System of record | Key record | Fields you need |
|---|---|---|
| Time and attendance, joined to the HR system | Employee and Shift | scheduled_days, absence_days, absence_type, certified_flag |
Separate short-term from long-term absence. One long-term case can double a site rate and needs a completely different response from a pattern of single days.
06 How it goes wrong
Three ways this metric misleads people
Blending long-term cases
A handful of long-term absences swamp the operational signal.
Fix: Report short-term and long-term separately.Rate only, never cost
The percentage is abstract; the overtime and agency bill is not.
Fix: Publish the cover cost next to the rate.Site averages
Absence concentrates in specific shifts and teams.
Fix: Report by shift and team, with the same care as safety data.08 Questions
Frequently asked
What is a normal absence rate?
Office environments often sit near 2%; shift-based operations run higher. Compare within the same kind of work, and watch the trend by shift.
Should absence be measured in days or occasions?
Both. Days measure lost capacity; occasions measure pattern. Frequent single days and one long case produce the same percentage and need opposite responses.
One definition, everywhere it is used
SCIKIQ stores this metric once and serves it to every dashboard, board pack and agent that asks.