Employee Turnover

The rate at which employees leave an organization and need to be replaced — a key metric for workforce health, hiring costs, and culture.

Employee turnover refers to the rate at which employees leave an organization within a given period, typically measured annually as a percentage of total headcount. A 20% annual turnover rate means 20% of the workforce left and had to be replaced in a year. Turnover is split into two main categories: voluntary (the employee chose to leave) and involuntary (the company terminated the employee). A third subcategory — regrettable turnover — tracks departures the company wished hadn't happened: high performers and valued employees.

Turnover is one of the most expensive HR problems most organizations face. The commonly cited cost to replace an employee ranges from 50% to 200% of their annual salary, depending on seniority, role complexity, and time-to-fill. These costs include recruiting and advertising, interviewer time, onboarding, training, productivity ramp for the new hire, and the lost output and institutional knowledge of the departed employee.

For job seekers, a company's turnover rate is meaningful due diligence. High voluntary turnover — particularly of high performers — signals management problems, culture issues, compensation gaps, or limited growth. LinkedIn tenure data, Glassdoor reviews, and direct interview questions can surface this. Asking 'How long has your current team been together?' or 'What's the tenure of the person I'd be replacing?' reveals more than most standard interview questions.

Voluntary vs. Involuntary Turnover

  • Voluntary: employee-initiated departures — resignations for better offers, burnout, relocation, career change.
  • Involuntary: employer-initiated departures — firings for cause, layoffs, performance-based exits.
  • Regrettable turnover: voluntary departures the company wanted to prevent — the most meaningful signal of organizational health.
  • Average annual turnover varies by industry: hospitality and retail run 50-75%; tech historically 10-25%; finance and professional services 15-20%.

How to Evaluate Turnover as a Candidate

  • Ask directly: 'What's the average tenure on this team?' Low average tenure signals instability.
  • LinkedIn can be revealing: search company employees and look at average time in role.
  • Glassdoor reviews often mention 'high turnover' explicitly when it's a known problem.
  • Ask why the role is open — internal promotion, growth hire, and backfill for a departure are very different situations.
  • Ask whether the people you'd work most closely with have been in their roles for a while.

Example

A candidate researching a company notices on LinkedIn that average engineering tenure is 13 months, and that three consecutive VPs of Engineering have left within a year. In her final-round interview she asks why the role is open. The answer — 'new headcount for growth' — doesn't match what she's observing. She declines the offer.