Employee Retention
What employee retention means, how to calculate your retention rate, and the strategies that actually keep great employees from leaving.
Employee Turnover
Quick Definition
Employee turnover is the rate at which employees leave an organization and are replaced over a defined period, usually expressed as an annual percentage. It includes voluntary and involuntary departures and is the inverse of employee retention.
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What Is Employee Turnover?
Employee turnover is the rate at which people leave an organization and are replaced over a defined period of time. It captures every kind of departure — resignations, retirements, terminations, and layoffs — and is most often reported as an annual percentage. Turnover is the inverse of employee retention: a 90% retention rate means a 10% turnover rate.
Some level of turnover is healthy and unavoidable. People retire, change careers, relocate, or move on for reasons that have nothing to do with the workplace. The turnover that organizations want to manage is the avoidable, regrettable kind — when high performers leave for reasons the company could have addressed. That's the segment where recognition, manager quality, growth opportunities, and employee engagement investments pay back the most.
Types of Employee Turnover
Not all turnover is the same. Sorting departures into the right buckets is the first step to interpreting your numbers correctly.
- Voluntary turnover. The employee chose to leave — resignation, retirement, or career change. This is the most actionable category for HR.
- Involuntary turnover. The employer ended the relationship — performance separation, termination for cause, or layoff.
- Regrettable turnover. Voluntary departures of high performers or hard-to-replace roles. The most expensive subset.
- Non-regrettable turnover. Departures the organization would have made anyway — low performers, redundant roles, or poor culture fits.
- Functional vs. dysfunctional. Functional turnover removes underperformers; dysfunctional turnover removes top performers. The same overall rate can hide very different stories.
- Internal turnover. Movement between teams or departments inside the company. Often a positive signal of mobility, not a loss.
How to Calculate Turnover Rate
The standard formula is straightforward:
Turnover Rate = (Separations during period ÷ Average headcount) × 100
For example, if you started the year with 200 employees, ended with 220, and 30 people left during the year, your average headcount is (200 + 220) ÷ 2 = 210. Your annual turnover rate is (30 ÷ 210) × 100 = 14.3%.
Always calculate voluntary and involuntary turnover separately — they tell very different stories. Then segment by department, manager, tenure band, and role type to find where turnover is concentrated. A company-wide rate of 12% can hide a 40% rate inside one struggling team. Most HR teams calculate turnover monthly (rolling 12-month) for a faster signal than annual snapshots.
Why Employee Turnover Matters
Turnover is one of the most expensive line items in the people budget. SHRM benchmarks put the cost of replacing an employee at roughly half to two times their annual salary once recruiting, onboarding, productivity ramp, and lost institutional knowledge are accounted for. For specialized roles, the multiplier runs higher.
The harder costs are downstream. Departures disrupt teams, push extra workload onto remaining employees, drag down employee morale, and erode customer relationships. Persistent high turnover also damages the employer brand, making the next round of hiring harder and more expensive than the last.
½–2× Replacing an employee typically costs between half and twice their annual salary, according to Gallup and SHRM benchmarks.
77% of employee turnover is preventable, according to the Work Institute's annual Retention Report.
Common Causes of High Turnover
- Lack of recognition. Employees who feel invisible disengage, and disengaged employees leave. Recognition gaps are among the most-cited reasons in exit interviews.
- Poor management. The manager relationship predicts retention more than nearly any other variable. Bad managers drive turnover regardless of how strong the rest of the company is.
- Limited career growth. Stagnation pushes ambitious employees out the door faster than compensation gaps.
- Below-market compensation. Pay isn't usually the top driver of turnover, but it amplifies every other complaint when it lags.
- Burnout. Sustained workloads beyond a healthy threshold drive even committed employees to disengage and exit.
- Weak onboarding. A rocky first 90 days creates long-tail turnover risk; many leavers were quietly disengaged from week one.
- Cultural misalignment. When stated values aren't lived day-to-day, top performers tend to leave first.
How to Reduce Employee Turnover
- Build a consistent recognition practice. Frequent, specific acknowledgment is one of the most cost-effective levers to reduce voluntary turnover.
- Pair recognition with a meaningful rewards program. Tangible rewards reinforce that contributions are seen and valued.
- Invest in manager quality. Train managers to give specific recognition, run real quarterly check-ins, and develop their teams.
- Celebrate milestones. Work anniversaries and tenure milestones are critical retention moments — that's when employees re-evaluate.
- Open visible career paths. Internal mobility, skill budgets, and clear progression frameworks keep employees invested in their future at the company.
- Use stay interviews. Don't wait for exit interviews. Ask current employees what's working and what's at risk while you can still act on it.
- Strengthen onboarding. Employees with great first 90 days are significantly more likely to be on staff a year later.
For practical ideas, see our roundup of free and low-cost appreciation ideas and five proven engagement strategies.
Frequently Asked Questions
What is employee turnover in simple terms?
Employee turnover is how often people leave a company and need to be replaced. It's usually expressed as an annual percentage and includes both voluntary departures (resignations, retirements) and involuntary ones (terminations, layoffs). Turnover is the inverse of retention.
How do you calculate employee turnover rate?
Divide the number of employees who left during the period by the average number of employees during that period, then multiply by 100. Formula: (Separations ÷ Average headcount) × 100. Most organizations calculate this annually, with a separate number for voluntary turnover.
What is a good employee turnover rate?
Healthy total turnover usually sits below 15% annually for most industries, with voluntary turnover ideally under 10%. Hospitality, retail, and call centers run much higher; government and skilled trades run lower. Compare to your industry benchmark via BLS or SHRM data rather than to a universal target.
What is the difference between voluntary and involuntary turnover?
Voluntary turnover is when employees choose to leave (resignation, retirement, career change). Involuntary turnover is when the employer ends the relationship (termination, layoff, performance separation). Voluntary turnover among high performers — sometimes called regrettable turnover — is the most expensive and the most preventable.
How does employee recognition reduce turnover?
Lack of recognition is consistently among the top reasons employees cite for leaving a job. Gallup research has shown employees who feel adequately recognized are significantly less likely to be actively job-searching. A consistent recognition practice paired with a meaningful rewards program is one of the lowest-cost levers to reduce voluntary turnover.