Absence Rates Project Budget (Team) Calculator Examples
Worked examples show how absence rates, staffing costs and contingency affect a team project budget and productive capacity.
These examples use different project sizes, schedules and absence assumptions to illustrate how the calculator estimates lost capacity, absence cover costs and a total staffing budget.
Small project team with low expected absence
Small team, short project, low absence rate
Input Summary
Team size
4 people
Project duration
6 weeks
Working days per week
5 days
Expected absence rate
3%
Daily cost per employee
$300 per day
Budget contingency
5%
Calculation Breakdown
- 1Planned person-days4 × 6 × 5120 person-days
- 2Expected absent capacity120 × 3%3.6 person-days
- 3Productive capacity120 - 3.6116.4 person-days
- 4Budget including contingency((120 × $300) + (3.6 × $300)) × 1.05$38,934
Result Summary
Budget including contingency
$38,934
Absence Rates Project Budget (Team) Calculator
The estimated staffing budget is $38,934, with 116.4 productive person-days expected.
Long project with a larger specialist team
Larger team, long project, 6% absence rate
Input Summary
Team size
12 people
Project duration
20 weeks
Working days per week
5 days
Expected absence rate
6%
Daily cost per employee
$420 per day
Budget contingency
12%
Calculation Breakdown
- 1Planned person-days12 × 20 × 51,200 person-days
- 2Expected absent capacity1,200 × 6%72 person-days
- 3Absence cover cost72 × $420$30,240
- 4Budget including contingency(($504,000 + $30,240) × 1.12)$598,349
Result Summary
Budget including contingency
$598,349
Absence Rates Project Budget (Team) Calculator
The project budget estimate is $598,349, and expected productive capacity is 1,128 person-days.
Four-day working week with elevated absence risk
Compressed working pattern, higher absence rate
Input Summary
Team size
6 people
Project duration
16 weeks
Working days per week
4 days
Expected absence rate
8%
Daily cost per employee
$500 per day
Budget contingency
15%
Calculation Breakdown
- 1Planned person-days6 × 16 × 4384 person-days
- 2Expected absent capacity384 × 8%30.72 person-days
- 3Productive capacity384 - 30.72353.28 person-days
- 4Budget including contingency(($192,000 + $15,360) × 1.15)$238,464
Result Summary
Budget including contingency
$238,464
Absence Rates Project Budget (Team) Calculator
The estimated staffing budget is $238,464, with 353.28 productive person-days expected.
How to Read Your Results
Planned person-days show scheduled capacity before allowing for absence.
Expected absent person-days are an estimate of capacity likely to be unavailable, not a prediction of individual absences.
Productive person-days show the expected remaining capacity after the entered absence rate.
The absence cover allowance values expected lost capacity at the daily cost entered.
The estimated project budget includes base staffing, expected absence cover and the selected contingency.
Compare several absence and contingency assumptions when the project is sensitive to staffing availability.
Assumptions & Important Notes
- Each example assumes that cover is available and can be costed at the stated daily employee cost.
- Absence is treated as an even percentage of total planned person-days.
- Dollar values are illustrative examples, not recommended staffing rates.
- Contingency is calculated after the base staffing and expected absence cover costs are combined.
Related Examples
Frequently Asked Questions
Can I use the examples with another currency?
Yes. The calculation works with any currency as long as the daily employee cost and resulting budget use the same currency.
Why is the absence cover cost separate from the base budget?
The base budget costs the originally scheduled team. The separate allowance estimates the additional cost of retaining capacity when absence occurs.
What happens if the absence rate is zero?
Expected absent person-days and absence cover cost are zero, but any entered contingency is still applied to the base staffing budget.
Can a four-day schedule be entered?
Yes. Enter 4 as the working days per week, and planned person-days will reflect that schedule.
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