Shift Coverage Planner
Coverage planning converts staffed post-hours into worker equivalents. An allowance for absence reduces each worker’s available hours, so the total headcount rises to preserve the required coverage.
How to use this calculator
- Enter the positions staffed simultaneously and the recurring weekly schedule.
- Check that units, denominator definitions and time periods are consistent before comparing scenarios.
- Run a second scenario when an assumption is uncertain.
Formula used by shift coverage planner calculator
Required weekly hours = staffed posts × shifts/day × hours/shift × operating days/week; headcount = ceiling(required hours / contracted hours per worker adjusted for absence).
- Required weekly hours = staffed posts × shifts/day × hours/shift × operating days/week; headcount = ceiling(required hours / contracted hours per worker adjusted for absence).
- It omits role-specific qualifications, minimum rest periods, shift patterns, breaks and demand variation. Follow applicable employment rules and local policies.
- The tool performs arithmetic on the values entered and does not validate assumptions against outside records.
Worked examples
Worked example
3 posts across two 8-hour shifts for five days, 40 contracted hours per worker and 10% absence allowance.
Required coverage is 240 hours/week; available hours are 36 per worker; 6.67 equivalents means 7 workers before other constraints.
The estimate rounds the required headcount up to a whole person.
Understanding the result
Coverage planning converts staffed post-hours into worker equivalents. An allowance for absence reduces each worker’s available hours, so the total headcount rises to preserve the required coverage.
It omits role-specific qualifications, minimum rest periods, shift patterns, breaks and demand variation. Follow applicable employment rules and local policies.
Important notes
It omits role-specific qualifications, minimum rest periods, shift patterns, breaks and demand variation. Follow applicable employment rules and local policies.
Treat this output as an estimate tied to the stated inputs. For regulated, safety-critical, tax or professional decisions, verify applicable official guidance and specifications.
Frequently asked questions
Does the result give an actual shift roster?
No. It estimates a headcount requirement from hours.
Why include absence allowance?
A portion of contracted hours may be unavailable due to leave, sickness or training.
How should I interpret the result?
It omits role-specific qualifications, minimum rest periods, shift patterns, breaks and demand variation. Follow applicable employment rules and local policies.
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This page provides a calculation tool plus explanatory information so you can understand what the result means and when the underlying method may not fit your situation.