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HR glossary

What is Attrition in HR? Meaning, Types and Example

Attrition is the reduction of a company's workforce as employees leave through resignation, retirement, termination or death. In Indian companies, the word is commonly used for all employee exits in a period, and the attrition rate expresses those exits as a percentage of the average headcount.

Types of attrition

Separate these types when reporting, and track each one by department and month. A single attrition rate that mixes the resignations of strong performers with dismissals for misconduct hides what is really happening, and leads to the wrong fixes.

Attrition vs turnover

The two words are often used as synonyms, but there is a useful difference. Turnover measures how often employees leave and are replaced, so it describes churn in positions that get refilled. Attrition, in its stricter sense, describes employees leaving when the position is not refilled, so the workforce shrinks. In practice, Indian IT and services companies use attrition for all exits, and many HR teams report one number. Define the term in your metrics policy and use it the same way every time. See HR metrics.

How companies manage attrition

Measure it every month by department, manager, location, tenure band and reason, and pair the numbers with exit interview themes. Early attrition points to hiring and onboarding. Attrition after two or three years often points to growth and pay progression. Attrition clustered under one manager points to leadership. Act on the cause, not the number. Not all attrition is bad: the exit of a persistent low performer can be healthy, while losing a few key people hurts more than a high overall rate.

Example: A Pune BPO had an average headcount of 800 in 2025-26 and 176 exits: 152 resignations, 18 terminations and 6 retirements. Its attrition rate was 176 / 800 x 100 = 22 percent, and voluntary attrition alone was 152 / 800 x 100 = 19 percent. Exit interviews showed that 70 of the resignations came from two night-shift processes, so HR focused its retention work there.

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Frequently asked questions

What is a good attrition rate?

There is no single good number, because acceptable attrition varies by industry, role, city and company stage. Compare your rate with your own past periods and with similar companies in your sector, and look at the mix: voluntary exits of strong performers matter more than exits after performance issues. A falling rate of regretted exits is a better sign than a low overall number.

How do you calculate the attrition rate?

Divide the number of employees who left in a period by the average headcount for that period and multiply by 100. Average headcount is usually the opening plus closing headcount divided by two, or the average of monthly headcounts. For example, 30 exits with an average headcount of 400 gives 30 / 400 x 100 = 7.5 percent for the period.