#2532 · Salary & HR Tool

Overtime Planning Retention Impact Calculator

Estimate the employee turnover and replacement-cost difference associated with an overtime-heavy group. Compare its turnover rate with a suitable baseline, then translate the excess departures into a planning estimate for retention risk and cost.

Calculator

Workforce planning inputs
employees
%
%
USD

How to use this calculator

  1. Choose one consistent workforce and measurement period.
  2. Enter the operational counts, rates, hours, and costs requested.
  3. Select Calculate to update the estimate and supporting results.
  4. Test alternative assumptions before using the result in a plan.

Formula

Excess departures = headcount × max(0, exposed turnover rate − baseline rate); cost = excess departures × replacement cost

What the result means

This is a comparison estimate, not proof that overtime caused departures. It quantifies the observed gap for budgeting and investigation.

Use groups with similar roles, locations, tenure, and labor-market conditions. Rates from unlike populations can create a misleading gap.

Example calculation

For 180 employees, a 22% exposed-group turnover rate versus a 14% baseline implies 14.4 excess departures. At $18,000 each, the estimated excess cost is $259,200.

Tips for better results

  • Use the same measurement window for both rates.
  • Choose a baseline with comparable roles and tenure.
  • Include recruiting, onboarding, and vacancy costs consistently.
  • Review exit feedback before attributing the gap to overtime.
  • Run a lower and higher replacement-cost scenario.

Frequently asked questions

Does this calculator prove overtime caused turnover?

No. It measures an association against a baseline; other differences between groups may explain some or all of the gap.

What replacement cost should I enter?

Use your organization’s consistent estimate for recruiting, onboarding, vacancy, and ramp-up costs per departure.

Can I use last year as the baseline?

Yes, if workforce mix and labor-market conditions are reasonably comparable and both rates use the same definition.

Why are negative excess departures shown as zero?

The tool estimates added retention exposure. If the exposed group performs better than baseline, there is no excess cost to report.

Should involuntary turnover be included?

Include only turnover categories that are measured consistently in both the exposed group and baseline.

Result guide

OutputHow to use it
Estimated excess turnover costPrimary planning estimate
Turnover-rate gapSupporting decision metric
Estimated excess departuresSupporting decision metric
Total exposed-group turnover costSupporting decision metric

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