46% of new hires fail within 18 months — and only 19% clearly succeed. (Leadership IQ, as cited in Cipher, ch. 1.) So before treating a high turnover rate as a retention problem, check whether it's a hiring problem that invoices you later. The metrics below tell you which one you have.
Not all turnover is bad. An under-performer leaving is the system working, and a steady trickle of new people brings new thinking. The question is never "is there turnover?" — it's which turnover, where, and how soon after hire. That's what these eight measures separate.
1. Retention rate
The share of employees still with you over a period. Useful as a headline, useless as a diagnosis — everything below is what makes it explain anything.
2. Turnover rate, benchmarked honestly
Compare against your industry, not a global average — hospitality and retail run structurally higher than professional services. A number without a benchmark is a mood.
3. Voluntary vs involuntary
Two different diseases. Involuntary turnover (you removed them) points at hiring and management. Voluntary turnover (they left) points at the role, the pay, or the boss. Lump them together and the signal cancels out.
4. First-year turnover
The hiring-quality metric. People rarely leave inside a year because the company changed — they leave because the job wasn't what either side thought it was. In Cipher, Craig della Penna describes a client that rolled structured, Cipher-based hiring across 1,200 hires in a year: first-year attrition halved. Same company, same pay, same culture — different hiring decisions.
5. Turnover by manager
Run the numbers by team and a pattern usually appears within minutes. One manager shedding people at twice the company rate is not a market condition.
6. Turnover by role and level
High churn concentrated in one role usually means the role is mis-defined: the job description promises one job, the week delivers another. M.P. McEnrue's research found job performance is a joint function of competence and role clarity — and that ambiguity hurts your most competent people most. (Organizational Behavior and Human Performance, 1984 — as cited in Cipher, ch. 1.) Your best hires are the first to leave a vague role.
7. Cost per departure
Hiring mistakes cost roughly 15x salary for a mid-to-senior role once you count separation, backfill, lost productivity, and the misses along the way (Cipher, ch. 1). Multiply your annual departures by that and turnover stops being an HR chart and becomes a board number.
8. Exit-interview themes, taken seriously
The metric everyone collects and nobody aggregates. Individually, exit interviews are politeness; grouped by theme and crossed against metrics 4–6, they name the cause.
What the metrics usually reveal
Run all eight and the most common finding is this: the turnover concentrates in the first year, in specific roles, under managers who hired fast against a vague description. Which means the fix isn't a retention programme — it's upstream, in how the role was defined and the hire was made.
That's what the Cipher does: defines what success in the role looks like — the charge, the outcomes, the deliverables — before anyone interviews, so both sides of the table are deciding about the same job. People don't quit jobs that turned out to be what they signed up for at anything like the rate they quit surprises.
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Frequently asked questions
What is a high turnover rate?
One meaningfully above your industry's norm — a number that only means something against the right benchmark, split into voluntary and involuntary. A 20% rate can be healthy in retail and alarming in engineering.
What is a good employee turnover rate?
There's no global figure; benchmark within your industry. The more useful question is where your turnover sits: turnover concentrated in the first year signals hiring problems, however the total compares.
Why is first-year turnover the number to watch?
Because it's the purest measure of hiring quality — the company hasn't had time to change, so early exits mean the role or the fit was mis-judged at hire. 46% of new hires fail within 18 months (Leadership IQ); structured, role-clear hiring is the lever that moves it.
How much does employee turnover cost?
For mid-to-senior roles, a mis-hire costs roughly 15x salary once separation, backfill, team productivity and missed opportunities are counted — higher still for executives.
Sources
- Murphy, M. “Why New Hires Fail.” Leadership IQ, 2011 — as cited in della Penna, Cipher (Third Act Publishers, 2026), ch. 1.
- McEnrue, M.P. “Perceived competence as a moderator of the relationship between role clarity and job performance.” Organizational Behavior and Human Performance 34(3), 1984 — as cited in Cipher, ch. 1.
- della Penna, C. Cipher: A Proven Framework to Hire the Best People. Third Act Publishers, 2026.