The hidden cost of employee turnover: how to calculate it

The resignation arrives in a two-line email. Then come the interviews, the open position, training and a team dividing up the work while a replacement is found. The cost of employee turnover starts long before anyone approves an invoice.

For HR and management, putting numbers to that process helps identify where to act. You do not need to borrow someone else’s percentage or impress anyone with a dramatic figure. You need a calculation your company can explain and repeat.

Start with a departure you can reconstruct

Choose a role and review a recent departure. Gather information from recruitment, the department manager and whoever supported onboarding. Divide the cost into four parts:

• Recruitment and selection: advertising, external fees, assessments and the hours spent reviewing and interviewing candidates.
• Covering the vacancy: extra hours, temporary support or activities that were postponed. Record only what you can substantiate.
• Onboarding: time spent on induction, training and support until the new employee can work independently.
• Operational effects: delays, rework or sales that were actually lost. If you cannot measure them, keep them as observations.

Watch for double counting. If a supervisor’s hours already appear under training, do not add them again elsewhere. Also distinguish additional spending from working time the company was already paying for: both matter, but they answer different questions.

A simple example with illustrative figures

Suppose a vacancy involves MXN $4,000 in recruitment, $3,000 in temporary coverage and $5,000 in training time. The total is $12,000. This is a calculation example, not a market estimate or a BENNOM result.

That total does not tell the whole story. There may have been missed opportunities or an extra workload for the team. Record these separately until you have evidence to assign a value. A modest, verifiable calculation is more useful than a large figure no one can support.

If you review several roles, use a consistent method. Comparing an operational role with a management position without adjusting the period, process and type of cost can lead to misleading conclusions.

Find out what is behind the departures

The cost shows where the impact is felt; conversations help explain why. Review exit interviews alongside tenure, department, shift and type of departure. Separate resignations from employer-initiated terminations.

Look for specific situations. Are people leaving during their first few months? Were expectations about working hours not met? Does career progression depend on criteria no one understands? Does one department have a concentration of departures hidden by the overall average?

Avoid treating a single response as a diagnosis. In a small team, even two departures can change a percentage substantially. Show the number of people and the period alongside the rate.

What employee benefits can contribute

A discount program or telemedicine services can be part of your employee value proposition. Their usefulness depends on people knowing about the benefit, being able to access it and finding options relevant to everyday life.

Other issues require organizational decisions. WHO identifies excessive workloads, limited control over work and job insecurity among the risks to mental health at work. A benefits catalog does not solve these problems on its own.

That is why any new benefit should be supported by listening, communication and follow-up. If departures are related to a department’s leadership, that conversation will still need to happen after a platform is introduced.

Bring a concrete decision to the next meeting

Prepare a one-page summary of the costs you documented, recurring reasons for departure and an action for each finding. Assign an owner and a review date. The action might be improving onboarding, clarifying career opportunities or explaining existing benefits more effectively.

When reviewing results, also consider changes in pay, seasonality, leadership and hiring. A decline in turnover does not, by itself, show that a benefit caused it.

If your next step is to review your benefits package, the guide to additional employee benefits will help you organize your questions before choosing a provider.