Employee turnover is the share of employees who leave an organization during a period, usually expressed as a percentage of average headcount. You calculate it by dividing separations by average headcount and multiplying by 100. For a professional-services firm, each departure also removes delivery capacity and client knowledge, so the number deserves careful reading. This guide covers the formula with a worked example, how to compare your rate with published benchmarks, why people leave, what turnover costs, and which retention practices have evidence behind them.
What Is Employee Turnover?
Employee turnover counts the people who leave your organization over a set period, whether they resign, are dismissed, are laid off, or retire. The US Bureau of Labor Statistics groups these exits as quits, layoffs and discharges, and other separations such as retirements in its Job Openings and Labor Turnover Survey.
Internal transfers and promotions usually do not count, because the person stays employed. Organizations also differ on whether to include contractors, interns, and temporary staff. In this guide, turnover means permanent employees on payroll who leave the organization.
Employee Turnover vs Attrition vs Retention
These terms overlap, and HR sources do not use them consistently. A common convention treats turnover as departures that are backfilled and attrition as departures that are not, typically because the role is eliminated or left open. Other sources reverse those labels or use the words interchangeably.
| Measure | What it counts | Typical formula | When to use it |
| Turnover rate | All separations in the period | Separations ÷ average headcount × 100 | Tracking overall workforce stability |
| Attrition rate | Separations that are not replaced (common usage) | Unreplaced separations ÷ average headcount × 100 | Workforce shrinking through hiring freezes or restructuring |
| Retention rate | Employees present at the start who are still there at the end | Starting employees still employed ÷ starting headcount × 100 | Measuring how well you keep existing people |
Whichever terms you use, write your definition into every turnover report. A number with no stated definition cannot be compared with anything.
Types of Employee Turnover
Splitting turnover into types tells you far more than the total alone. Two distinctions matter most: who made the decision, and whether you wanted the person to stay.
| Type | Example | Why track it separately |
| Voluntary | An engineer resigns to join a competitor | The main lever for retention work |
| Involuntary | A dismissal for misconduct, or a layoff | Reflects hiring quality, performance management, or business conditions |
| Regrettable | A strong performer you wanted to keep leaves | The turnover that hurts delivery most |
| Functional | A poor fit or low performer leaves | Can improve team performance over time |
A rising total can hide very different stories. Higher involuntary turnover after a performance review cycle is a different problem from senior consultants resigning one after another.
How to Calculate Employee Turnover Rate
The standard formula is:
Employee turnover rate = (Number of separations during the period ÷ Average headcount during the period) × 100
Average headcount is usually the headcount at the start of the period plus the headcount at the end, divided by two. If your headcount swings sharply within the period, averaging monthly headcounts gives a more accurate denominator.
Reporting conventions differ, so state yours. Decide whether layoffs and contractors count, and pick the period carefully. The BLS publishes monthly separation rates, while most HR teams report a rolling or calendar 12-month rate, which sums a full year of separations.
Worked Example: An Engineering Consultancy With 120 Average Employees
Take a hypothetical engineering consultancy that tracks one calendar year.
| Input | Value |
| Headcount on 1 January | 125 |
| Headcount on 31 December | 115 |
| Average headcount | (125 + 115) ÷ 2 = 120 |
| Separations during the year | 18 (12 voluntary, 6 involuntary) |
| Voluntary exits the firm regretted / did not regret | 8 / 4 |
| New hires during the year | 8 |
| Rate | Calculation | Result |
| Overall turnover | 18 ÷ 120 × 100 | 15.0% |
| Voluntary turnover | 12 ÷ 120 × 100 | 10.0% |
| Involuntary turnover | 6 ÷ 120 × 100 | 5.0% |
| Regrettable turnover | 8 ÷ 120 × 100 | 6.7% |
| Functional turnover | 4 ÷ 120 × 100 | 3.3% |
The headline 15.0% tells the leadership team that turnover exists. Its regrettable component, 6.7%, shows them where to look first.
Why Small Teams Should Read Turnover Carefully
In a small firm, one resignation moves the annual rate a long way. A single departure adds 4.0 percentage points when you have 25 employees, 2.5 points at 40 employees, and about 0.7 points at 150.
For that reason, look at counts alongside percentages, use rolling 12-month figures instead of single months, and break results down by team, role, and tenure. Two departures from one five-person team say more than the company-wide rate does.
What Is a Good Employee Turnover Rate?
No single turnover rate is good for every organization. A rate only means something when you compare it with data that uses the same definition, period, industry, geography, and workforce mix. Before comparing, check these five points.
| Check | Question to ask |
| Definition | Does the benchmark include layoffs, retirements, and contractors? |
| Period | Is it a monthly rate or an annual rate? |
| Population | Which industries, company sizes, and roles are included? |
| Geography | Which country or region does the data cover? |
| Year | Does it reflect current labor market conditions? |
Published reference points show how much these choices matter:
- United States: the total separations rate averaged 3.3% per month in 2025, with quits at 2.0%, layoffs and discharges at 1.1%, and other separations at 0.2%, according to the BLS annual JOLTS release. Those are monthly rates across all nonfarm employers, so they cannot be compared directly with a company’s annual figure.
- United Kingdom: CIPD analysis reports attrition ranging from 25% in public administration and defence to 52% in hospitality for 2022 to 2023, in its benchmarking discussion.
- India: Aon’s salary increase and turnover survey reported overall attrition of 16.2% in 2025, down from 17.7% in 2024, across more than 1,400 organizations, according to Aon’s February 2026 release.
US and UK figures do not transfer to firms operating in India or the GCC, and an all-industry average tells a 60-person IT consultancy little about its peers. Your own trend over several years is often the most useful benchmark you have.
Why Employees Leave: Common Drivers
Exit reasons cluster around a few themes: pay and benefits, career progression, workload, and the relationship with a manager. Gallup’s 2024 study of 717 US workers who had left a job voluntarily gives a useful view from the leavers themselves.
In that study, 42% said their manager or organization could have prevented their departure. Asked what would have kept them, leavers most often cited pay or benefits (30%), career advancement (11%), and better staffing or workload management (9%).
These are self-reported answers from people who already left, so they describe perceptions rather than proven causes. They still give a clear starting list for your own diagnosis.
What Employee Turnover Costs
Turnover costs fall into two groups. Direct costs appear in budgets, while indirect costs show up as slower delivery and stretched teams.
| Cost component | Direct or indirect | How to estimate it in your firm |
| Recruitment (job ads, agency fees, interview time) | Direct | Sum spend and hours per hire over the last year |
| Administration of the exit | Direct | HR and payroll hours per leaver |
| Cover during the vacancy (overtime, contractors) | Direct | Extra hours or contractor invoices while the role was open |
| Onboarding and training the replacement | Direct | Training spend plus trainer and manager hours |
| Lost productivity while the new hire ramps up | Indirect | Weeks to full productivity multiplied by expected output |
| Client knowledge and relationship loss | Indirect | Project delays, rework, or client escalations after the exit |
For a single headline figure, Gallup estimates that replacing an employee can cost one-half to two times the employee’s annual salary, and describes that range as conservative. The estimate is US-based and several years old, so treat it as a sense of scale. Your own cost table is the better number to put in front of leadership.
How to Diagnose Why People Leave
Start with patterns before opinions. Segment your separations by team, role, tenure band, manager, and location, then look for clusters. Departures concentrated in the first year usually point to hiring or onboarding problems, while exits from one team point toward that team’s workload or leadership. A practice of analyzing workforce data regularly makes these patterns visible early.
Exit interviews add the reasons behind the pattern. Ask what triggered the job search, what would have changed the decision, and what the person’s new role offers. Leavers often give polite answers, so a neutral interviewer from outside their reporting line tends to hear more.
Stay interviews ask the same questions of people who are still with you. Gallup’s leaver study found that 45% of leavers said no manager or leader had discussed their job satisfaction, performance, or future with them in the three months before they left. Regular conversations about the future are cheap compared with replacing the person.
Retention Practices Supported by Evidence
Match each practice to the driver it addresses, and be clear about how strong the evidence is.
| Driver | Practice | Evidence basis |
| Pay and benefits | Review pay against the market on a fixed cycle | Most-cited preventable reason in Gallup’s leaver study |
| Career advancement | Publish career paths and discuss them in reviews | Second most-cited reason in the same study |
| Workload and staffing | Monitor allocation and leave so work does not pile onto a few people | Cited by leavers; also an operational recommendation |
| Manager relationship | Hold regular conversations about satisfaction and future plans | Gallup finding on missing pre-exit conversations |
| Early tenure | Run structured onboarding for every new hire | Operational recommendation |
None of these guarantees lower turnover. They target the reasons people give for leaving, which makes them a reasonable place to start.
Employee Turnover in Professional-Services Firms
Turnover hits project-based firms differently from product companies. A consultant’s departure reduces billable capacity immediately, and the client often feels it before the finance team does.
Consider a hypothetical IT consultancy that loses a senior developer six weeks before a client go-live. The project manager has to reassign that developer’s open tasks to people already allocated elsewhere. Overtime rises, other projects slow down, and the replacement needs time to learn the client’s systems even after they are hired.
Firms that handle this well do three things before anyone resigns. They document project knowledge as work progresses, they identify cover for critical roles through succession planning for critical roles, and they keep current records of who is allocated where and who is on leave.
How an HRMS Supports Turnover Tracking and Continuity
An accurate turnover rate depends on clean joiner and leaver records, and continuity planning depends on knowing who is available. Keeping that information in an HRMS, rather than spread across spreadsheets, makes both easier.
Juntrax HRMS keeps employee records, attendance, and leave requests from submission to approval in one system, with self-service access for employees. When someone leaves mid-project, managers can see current leave and attendance alongside the rest of the team’s records while they plan cover. Juntrax works alongside the accounting tools you already use.
Turning Turnover Data Into Decisions
Employee turnover becomes useful once you define it clearly, calculate it the same way every period, and compare it only with data built on the same basis. Break the total into voluntary, involuntary, regrettable, and functional turnover, then read the segments before reacting to the headline rate. Diagnose the reasons people give for leaving, and target retention work at those reasons.
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Frequently Asked Questions
What Is a Good Employee Turnover Rate?
There is no universal good rate. Compare your rate with benchmarks that use the same definition, period, industry, and country, and with your own results from previous years.
Is Employee Turnover the Same as Attrition?
It depends on the convention. Many HR teams use turnover for departures that are replaced and attrition for departures that are not, but conventions vary, so state your definition in reports.
Do Layoffs Count in Employee Turnover?
Usually yes. Overall turnover includes layoffs and dismissals as involuntary separations, while voluntary turnover counts only resignations.
Should You Measure Turnover Monthly or Annually?
Track it monthly to spot changes early, and report a rolling 12-month rate for decisions. Monthly rates in small firms swing too much to judge on their own.
Do Internal Transfers Count as Turnover?
No. A transfer or promotion keeps the person employed, so it is not a separation. Some firms track internal moves separately to understand mobility.
How Much Does Employee Turnover Cost?
Gallup estimates replacement costs at one-half to two times annual salary. A more useful figure comes from adding up your own recruitment, vacancy cover, onboarding, and lost productivity costs per leaver.