Schedule adherence

Schedule adherence measures how closely worked hours match scheduled hours. A shift rostered nine to five and worked nine to five adheres. One worked from twenty past nine to twenty past six does not, even though it is the same eight hours, because both the start and the finish moved.

Why the direction matters

Adherence is usually reported as a single percentage, which throws away the useful half of the signal. Consistently finishing late means the shift is under-resourced or the handover is unclear. Consistently starting late points at travel, rota communication or the clock itself being awkward to reach. Both reduce adherence, and they call for opposite responses.

• Late starts, which usually point at communication or access
• Early finishes, which often mean the shift was over-covered
• Late finishes, which usually mean it was under-covered
• Shifts worked that were never scheduled at all

Using it without weaponising it

Adherence is a diagnostic about scheduling, not a performance score for individuals. Used as a score it produces exactly one behaviour, which is people clocking to the number rather than to the work, and that costs more than the drift it was meant to fix. Read it at the level of the shift pattern and the site, where the causes actually live.

“Measure adherence to find out what your schedule gets wrong, not to find out who to talk to.”