Employee Absence and Recruitment Cost Formula
Learn how an individual employee's absence, cover, productivity loss and replacement recruitment cost are estimated.
This calculation estimates the potential financial impact of absence for one role. It combines fully loaded employment cost for absent days, temporary cover, an estimate of unrecovered work, and an optional one-off recruitment cost.
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Total Cost Including Recruitment
Where:
First, calculate the employee's salary plus employer costs per working day. Apply that daily cost to absence days, add cover and unrecovered productivity, then add the one-off recruitment estimate.
Variables Explained
| Variable | What It Means | Unit |
|---|---|---|
| annualSalary - Annual salary | The employee's gross annual salary before employer-paid costs are added. | currency |
| employerOnCosts - Employer on-costs | Employer-paid costs expressed as a percentage of annual salary. | percent |
| workingDaysPerYear - Working days per year | The employee's normal paid working days in the year before absence is deducted. | days |
| absenceDays - Absence days | The number of paid workdays absent during the year. | days |
| coverCostPerDay - Temporary cover cost per day | The daily agency, overtime, contractor, or other cover cost. | currency |
| productivityLoss - Uncovered productivity loss | The share of daily employment cost representing work not recovered during absence. | percent |
| recruitmentCost - Estimated recruitment cost | The one-off estimated cost of recruiting and onboarding one replacement. | currency |
Step-by-Step Calculation
Calculate annual employment cost
Add the estimated employer on-cost percentage to gross annual salary.
annualEmploymentCost = annualSalary * (1 + employerOnCosts / 100)
Calculate daily employment cost
Divide the fully loaded annual employment cost by paid working days.
dailyEmploymentCost = annualEmploymentCost / workingDaysPerYear
Calculate paid absence cost
Apply the estimated daily employment cost to the absence period.
paidAbsenceCost = dailyEmploymentCost * absenceDays
Calculate cover cost
Multiply the daily cover cost by the number of absence days.
coverCost = coverCostPerDay * absenceDays
Calculate productivity cost
Estimate the value of work that cover or colleagues do not recover.
productivityCost = dailyEmploymentCost * absenceDays * productivityLoss / 100
Calculate total absence cost
Combine paid absence, cover, and unrecovered productivity.
totalAbsenceCost = paidAbsenceCost + coverCost + productivityCost
Add recruitment cost
Add the separate one-off replacement hiring estimate.
totalCostIncludingRecruitment = totalAbsenceCost + recruitmentCost
Example: 10 absence days and a replacement hire
Annual employment cost
£50,000 × (1 + 20 / 100)
£60,000.00
Daily employment cost
£60,000 / 260
£230.77
Paid absence cost
£230.77 × 10
£2,307.69
Cover cost
£220 × 10
£2,200.00
Productivity cost
£230.77 × 10 × 25 / 100
£576.92
Total absence cost
£2,307.69 + £2,200.00 + £576.92
£5,084.62
Total including recruitment
£5,084.62 + £5,000.00
£10,084.62
Final Result
Estimated total absence and replacement cost: £10,084.62, including £5,084.62 in absence-related costs.
Assumptions
- ✓Annual salary and employer on-costs reasonably represent the role's total employment cost.
- ✓Absence days are paid workdays and do not include planned annual leave.
- ✓Temporary cover is required and charged for every absence day entered.
- ✓The productivity-loss percentage represents work not recovered through cover, overtime, or redistribution.
- ✓Recruitment cost is a one-off cost for one replacement hire.
Limitations
- !Actual sick-pay arrangements, contractual terms, and payroll treatment may differ from the estimate.
- !The calculation does not automatically include management time, employee relations activity, training time, or vacancy duration.
- !Productivity loss is difficult to measure and depends on the role, workload, and available cover.
- !A replacement may have a different salary, benefit package, or start date from the absent employee.
Common Mistakes to Avoid
Using net pay rather than gross annual salary.
Entering calendar days instead of paid working days.
Including planned annual leave as absence.
Counting cover cost without checking whether it already includes overtime premiums or agency fees.
Setting productivity loss to 100% when cover or colleagues recover part of the work.
Adding the new hire's full annual salary to recruitment cost, even though salary is a separate ongoing employment cost.
Related Formulas
Frequently Asked Questions
What is the formula for employee absence cost?
The calculator adds paid absence cost, temporary cover cost, and estimated unrecovered productivity cost. It then adds recruitment cost if a replacement hire is being considered.
How is daily employment cost calculated?
Annual salary is increased by employer on-costs, then divided by the number of paid working days in the year.
Why is paid absence cost included alongside cover cost?
The model treats the absent employee's employment cost and the cost of covering their work as separate potential cost components.
What should the productivity-loss percentage represent?
It should represent the portion of the absent employee's work that is delayed, missed, or completed less effectively despite cover arrangements.
Is recruitment cost charged for every absence day?
No. Recruitment cost is entered as a separate one-off amount and added once to the absence-related estimate.
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