Employee turnover measures the percentage of employees who leave during a period against average headcount, counting every separation regardless of whether the position gets backfilled.

The precise distinction from attrition, and why it rarely holds in practice

Turnover Rate = (Total Separations ÷ Average Headcount) × 100

Using the same 200-to-185-employee example as attrition rate, but counting all 30 departures rather than just the 15 unreplaced ones: (30 ÷ 192.5) × 100 ≈ 15.6%. The textbook distinction is real: turnover counts every departure, backfilled or not, while attrition counts only the ones that shrink the workforce. In practice this line gets blurred constantly, plenty of HR content, and even some vendor glossaries that define the distinction carefully, still use worked examples that treat the two as synonyms. The honest takeaway: know the technical difference, but always check what a specific reported figure is actually counting before drawing conclusions from it.

Frequently asked questions

Which number is bigger, attrition or turnover?

Turnover is always equal to or larger than attrition for the same period, since it includes every departure rather than just the unreplaced ones.

Does high turnover always mean a company is shrinking?

No, high turnover with full backfilling means the workforce size stays stable, it’s attrition rate specifically that signals actual shrinkage.

Is turnover always a bad sign?

Not necessarily, some churn is healthy, especially where it reflects planned restructuring or genuinely underperforming roles being refreshed rather than unwanted departures.

Calculate it with the Employee Turnover Calculator, and see retention rate for the inverse view.