Staffing Relief Factor Calculator
The theoretical staffing minimum assumes every employee is available whenever scheduled. Relief staffing accounts for the portion of paid time that is predictably unavailable for normal coverage.
Enter your scheduling assumptions
Change the inputs and the result updates immediately. Keep the assumptions realistic—the output is only as useful as the staffing model you give it.
Recommended staffing: 20 employees
Method
Expected availability = 100% minus the combined unavailable-time assumptions. Relief-adjusted FTE = base FTE ÷ availability. The whole-person target rounds that adjusted FTE up.
Example
If 15% of otherwise available time is expected to be lost to PTO, sickness, training, and other causes, a base requirement of 16.8 FTE becomes approximately 19.8 FTE.
What the answer means
Use the result as a capacity-planning baseline. Round to real people, then test whether the roster can absorb leave, qualifications, role restrictions, and uneven availability.
What this tool does not prove
Do not double-count unavailable time already built into another staffing factor. Use historical rates or policy assumptions that match your own workforce.
Answer the planning question before assigning names
Calculate relief staffing for PTO, sick leave, training, and other unavailable time so base FTE is not mistaken for operational headcount.
Combine PTO, sick time, training, and other unavailable time.
See the difference between base FTE and relief-adjusted staffing.
Avoid using a simple percentage add-on when availability loss compounds capacity.
Capacity math cannot see every person-level scheduling constraint
A staffing model can be mathematically feasible and still fail when only certain people are qualified for a role, approved absences remove key people, assignments overlap, rest windows are too short, or coverage changes on specific dates. Those are the checks RoleSchedule keeps attached to the schedule itself.