Voluntary Turnover: Definition, Causes, and How to Reduce It
Voluntary turnover is when employees choose to leave. Definition, causes, real cost for small businesses, and how onboarding reduces it.
Voluntary Turnover
What it is, why it happens in the first 90 days, and how onboarding prevents it
I lost three people in my first year of running a team. All three left voluntarily. When I asked each of them why, the answers were almost identical: they did not know if they were doing well, they did not feel like anyone was investing in them, and they had better options elsewhere. None of that was inevitable. All of it was fixable with a better onboarding process and more consistent follow-through in the first 90 days.
Voluntary turnover is the category of employee exits that are almost entirely within your control. Unlike layoffs or terminations, voluntary departures are the ones where the employee made the choice to leave. Which means the question is not just "why did they go?" but "what could we have done differently?" For small businesses, that question is usually answered by looking at the first three months.
What Is Voluntary Turnover?
Voluntary turnover is when an employee chooses to leave an organization on their own initiative. The departure is initiated by the employee, not the employer. Resignations, retirements, and job abandonments all count as voluntary turnover. Layoffs, terminations for cause, and contract expirations do not.
The distinction matters because voluntary and involuntary exits have completely different causes and require completely different responses. Involuntary turnover is something you do to your workforce. Voluntary turnover is something that happens because of how your workforce experiences your company. Measuring them separately tells you which problem you actually have.
Voluntary vs. Involuntary Turnover
Voluntary and involuntary turnover combine into your total turnover rate, but they signal fundamentally different things about your organization. Most small business owners track total turnover and miss the signal that comes from separating the two.
| Voluntary Turnover | Involuntary Turnover | |
|---|---|---|
| Who initiates it | The employee | The employer |
| Common causes | Better opportunity, poor management, onboarding failure, compensation | Performance issues, layoffs, position elimination |
| Preventability | High. Largely within employer control. | Medium. Layoffs are often driven by business conditions. |
| What it signals | Problems with employee experience, management, or culture | Problems with hiring accuracy or business performance |
| Average US rate | ~12% annually (BLS) | ~5% annually (BLS) |
| Cost to replace | 50–200% of salary (SHRM) | 25–75% of salary (lower, since planned) |
For most small businesses, voluntary turnover is the more pressing and more expensive problem. Involuntary exits are often predictable and can be planned for. Voluntary exits tend to be sudden, happen at the worst time, and take institutional knowledge with them. The employee who resigns on a Monday is rarely the one you saw coming.
For a deeper breakdown of what counts as a high rate for your industry and company size, the guide to high turnover rates covers benchmarks by sector with actionable thresholds for small businesses.
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See How It WorksFunctional vs. Dysfunctional Voluntary Turnover
Not all voluntary turnover is equally bad. HR research distinguishes between two types based on who is leaving and what the departure does to team performance.
For small businesses, this distinction matters more than it does for large companies. When you have 15 people and your best engineer leaves, that is not an abstract metric. That is half your technical capacity walking out the door. When the employee you were considering letting go resigns instead, that is a genuine relief that saves you a difficult conversation and a performance management process.
The goal is not to eliminate all voluntary turnover. The goal is to minimize dysfunctional turnover: keep your high performers, let your low performers self-select out, and build an experience that makes the difference obvious to people before they decide to leave.
Why the First 90 Days Drive Voluntary Turnover
The first 90 days are the highest-risk window for voluntary turnover at any company, but especially at small businesses where onboarding is inconsistent and manager attention is split across many priorities. The data on this is consistent across multiple research sources and has been for years.
The mechanism is straightforward. A new hire arrives with a set of expectations built from the job description, the interview process, and the offer conversation. If the reality of Day 1 through Day 30 does not match those expectations, the new hire starts recalibrating. They ask themselves: did I make the right choice? If no one is helping them answer that question with clear goals, regular feedback, and genuine integration into the team, they start looking for alternatives before they even fully settle in.
The three most common early-tenure departure triggers at small businesses are: role ambiguity (they do not know what they are supposed to be doing), manager absence (no one is checking in or seems to care), and cultural mismatch (the team environment is different from what was described). All three are addressable through structured onboarding with a clear 30-60-90 day plan, assigned check-in cadence, and deliberate culture integration in Week 1.
What Voluntary Turnover Actually Costs a Small Business
Most small business owners significantly undercount the cost of voluntary turnover because the largest components are invisible in their accounting. Direct costs like job board spend and recruiter fees show up on invoices. The time cost (manager hours on interviews, team productivity drag during the vacancy, onboarding time for the replacement) does not appear anywhere on a P&L.
For a concrete example: a 20-person company losing 2 employees per year at an average salary of $55,000 is looking at $55,000 to $110,000 in annual turnover costs using SHRM's 50–100% multiplier for mid-level roles. That is a material number for a small business. It is also a number that could largely be eliminated with a $1,000–$2,000 annual investment in structured onboarding tools and manager training.
The cost calculation breaks down into four components. Separation costs cover the exit interview, HR administration, and any severance or accrued PTO payout. Vacancy costs cover the productivity gap while the role is unfilled and the overtime or contractor spend that fills it. Replacement costs cover job postings, recruiter fees, and manager time on screening and interviews. Onboarding costs cover the time to get the replacement to full productivity, which typically runs three to six months for skilled roles.
How to Calculate Your Voluntary Turnover Rate
The voluntary turnover rate formula is straightforward. Divide the number of voluntary departures in a period by the average number of employees in that period, then multiply by 100 to get a percentage.
| Step | Action | Example (20-person company) |
|---|---|---|
| 1 | Count voluntary departures in the period | 3 employees resigned in 12 months |
| 2 | Calculate average headcount | (19 start + 21 end) ÷ 2 = 20 average employees |
| 3 | Apply the formula | (3 ÷ 20) × 100 = 15% voluntary turnover rate |
| 4 | Compare to your industry benchmark | 15% is above the 10% target for most industries |
| 5 | Separate by tenure bucket | How many left in first 90 days vs. after 1 year? |
Track voluntary and involuntary exits separately from Day 1. Your payroll records or HR system should categorize each departure at the time of exit. If you are retroactively trying to calculate this from memory, the bucket "left voluntarily vs. was let go" is usually recoverable from email records or manager notes.
For the full formula with worked examples, voluntary versus involuntary breakdowns, and industry benchmark tables, the turnover rate calculation guide covers every variation including new hire turnover rate and regrettable vs. non-regrettable departure splits.
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See It in Action5 Ways Better Onboarding Reduces Voluntary Turnover
Onboarding is the highest-leverage intervention for voluntary turnover because it addresses the window when most voluntary exits happen. Organizations with strong onboarding improve new hire retention by 82% and productivity by over 70% (Brandon Hall Group). Here is what that looks like in practice for a small business without an HR department.
1. Preboarding eliminates the "did I make the right choice?" anxiety. The period between offer acceptance and Day 1 is when a new hire's doubt is highest. A welcome email with the Day 1 schedule, parking details, and a photo of who to ask for reduces first-day anxiety before it can compound into second-guessing. The preboarding guide covers the full timeline from offer to Day 1.
2. Written 30-day goals eliminate role ambiguity. Role ambiguity is the leading cause of early-tenure voluntary departures. When a new hire does not know what they are supposed to accomplish in their first month, they cannot tell if they are succeeding. They fill that uncertainty with worry. A one-page document listing three to five specific 30-day goals, handed over on Day 1, removes that ambiguity entirely.
3. A structured check-in cadence prevents silent disengagement. The most dangerous voluntary turnover signal is silence. A new hire who goes quiet after Week 1 is usually overwhelmed or disengaged, not happy and productive. Scheduled check-ins at Day 7, Day 30, Day 60, and Day 90 create structured moments to surface problems before they become resignation letters. The new hire check-in questions guide has questions for each milestone designed to surface disengagement before it reaches the point of departure.
4. Onboarding training reduces "I feel undertrained" exits. Research shows that employees who feel undertrained in their role are significantly more likely to resign voluntarily. At a small business, training often means "shadow whoever is available," which is not a plan. A structured training schedule with named contacts for each topic area gives new hires a visible path to competence rather than a feeling of being thrown in the deep end. The onboarding training guide covers the four-phase training framework for teams without a dedicated L&D function.
5. A buddy system builds the belonging that prevents cultural exits. Cultural mismatch is one of the three most common reasons for early-tenure voluntary departures. A buddy, not a formal mentor program, is all that is required: one team member assigned to answer the questions new hires are afraid to ask their manager. Buddy programs run properly reduce time-to-productivity by 23% (Microsoft research) and are directly correlated with new hire satisfaction at 90 days.
- Voluntary turnover is when employees choose to leave on their own. It is fundamentally different from involuntary turnover and requires a different response: improving the employee experience rather than adjusting hiring or performance management.
- The first 90 days are the highest-risk window. Roughly 15% of all voluntary turnover happens before an employee reaches their 90-day mark. Most of it is preventable with structured onboarding.
- One voluntary departure at a 20-person company costs $10,000–$135,000 depending on the role. Most small business owners dramatically undercount this because the time component is invisible in their accounting.
- Role ambiguity, manager absence, and cultural mismatch are the three most common early-tenure voluntary departure triggers. All three are addressable through better onboarding with clear goals, scheduled check-ins, and a buddy system.
- Organizations with strong onboarding improve new hire retention by 82%. The ROI on structured onboarding almost always exceeds the cost of voluntary turnover it prevents.
Frequently Asked Questions
What is voluntary turnover?
Voluntary turnover is when an employee chooses to leave an organization on their own initiative, rather than being laid off or terminated. Common reasons include better opportunities elsewhere, dissatisfaction with management, lack of role clarity, poor onboarding, or inadequate compensation. It is measured separately from involuntary turnover because the causes and prevention strategies are fundamentally different. Voluntary turnover is largely preventable through better management, onboarding, and engagement practices.
When does voluntary turnover occur?
Voluntary turnover occurs when an employee makes the personal decision to resign from their position. It most frequently happens during two windows: the first 90 days of employment (when new hires realize the job does not match their expectations) and at the one-year mark (when employees complete a full performance cycle and assess their satisfaction). Research from the Work Institute shows that 37% of all voluntary exits happen within the first year, with 39% of those occurring in the first 90 days.
What is the difference between voluntary and involuntary turnover?
Voluntary turnover is initiated by the employee: they resign, retire, or abandon the role. Involuntary turnover is initiated by the employer: termination for cause, layoff, or position elimination. Both count toward your total turnover rate, but they require completely different responses. Voluntary turnover signals something about the employee experience. Involuntary turnover signals something about hiring, performance management, or business conditions. For small businesses, voluntary turnover is usually the more pressing problem because it is largely preventable.
What causes voluntary turnover?
The leading causes of voluntary turnover are: lack of growth opportunities (cited by 22% of departing employees), poor management relationships, inadequate compensation, weak onboarding that creates role confusion in the first 90 days, cultural misalignment, and burnout from understaffing. For small businesses specifically, the most controllable cause is onboarding quality. Research shows that 20% of all employee turnover happens within the first 45 days, and virtually all of that is preventable with structured onboarding, clear 30-day goals, and consistent check-ins.
What is a good voluntary turnover rate?
A good voluntary turnover rate for most industries is 10% or below annually. Retail and hospitality typically run 25–40% (and anything under 20% is considered good). Tech runs 8–12%. Healthcare runs 15–20%. For a small business with 20 employees, 10% means losing 2 employees per year. Each departure at that scale costs $10,000–$90,000+ depending on the role. Tracking your rate quarterly, not just annually, gives you an earlier signal that something is wrong with retention before you have lost multiple people.
What does voluntary turnover cost a small business?
Replacing one employee costs 50–200% of their annual salary, according to SHRM. For a 20-person company losing 2 employees per year at an average salary of $55,000, that is $55,000–$110,000 in annual turnover costs. These costs include recruiting fees, job board spend, manager time on interviews, reduced team productivity during the vacancy, onboarding time for the replacement, and the learning curve before the new hire reaches full productivity. Most small business owners dramatically undercount these costs because the time component is invisible in accounting systems.
How do you calculate voluntary turnover rate?
The voluntary turnover rate formula is: (Number of voluntary departures in the period divided by Average number of employees in the period) multiplied by 100. Example: if 3 employees voluntarily left over 12 months and your average headcount was 22, your voluntary turnover rate is (3 divided by 22) times 100, which equals 13.6%. Track voluntary and involuntary departures separately to get accurate rates for each. Your HR system or payroll records should categorize each departure at the time of exit.