Employee retention rate: formula, examples and how to improve it

How to calculate employee retention rate, how it differs from turnover, how to measure it for hourly teams and what moves the number.

In shortEmployee retention rate is the share of employees at the start of a period who are still employed at the end of it. Formula: (employees at start who are still employed at end ÷ employees at start) × 100. New hires during the period are left out. It is the mirror image of turnover for the same group, and for hourly teams it is most useful when measured by location, role, manager and tenure band, especially the first 90 days.

The formula

Retention rate answers a simple question: of the people we had at the beginning, how many did we keep?

Retention rate formula
Part Meaning
Employees at start (S) Headcount on the first day of the period
Of those, still employed at end (R) People from S who are still on the payroll on the last day
Retention rate R ÷ S × 100

Example (fictional): a restaurant group starts the year with 120 employees. During the year it hires 70 people. On December 31, 84 of the original 120 still work there. Retention rate = 84 ÷ 120 × 100 = 70%. The 70 new hires do not affect the calculation, even if some of them also left.

Retention versus turnover

Turnover rate usually measures separations during a period as a share of average headcount, and it includes people hired and lost in the same period. Retention focuses only on the starting group. The two numbers answer different questions, and you can have a reasonable retention rate with high turnover if many new hires leave quickly.

Retention and turnover compared
Retention rate Turnover rate
Question it answers How many of our existing people stayed? How much churn did we have overall?
Includes new hires No Yes
Typical formula Stayed ÷ employees at start × 100 Separations ÷ average headcount × 100
Best use Stability of the core team Total cost of hiring and replacement

Use both. Our employee turnover calculator handles the turnover side, and the glossary explains turnover rate and attrition.

Choosing the right period

Annual retention is the standard for reporting, but hourly businesses often need a faster signal. Many employers track quarterly or monthly retention and, most importantly, new-hire retention at 30, 60 and 90 days. In high-turnover roles, a large share of departures happen in the first weeks, so an annual number can hide the real problem.

New-hire retention

New-hire retention measures how many people hired in a period are still employed after a set time.

90-day new-hire retention
Step Example (fictional)
Hired in Q1 40
Still employed 90 days after their start date 28
90-day retention 28 ÷ 40 × 100 = 70%

If 90-day retention is low, look at hiring and onboarding first: were expectations about hours and pay clear, was there a training plan, did the person get the schedule they were promised? See how to onboard hourly employees.

Segment the number

A single company-wide rate hides the information you need. Break it down:

What counts as a good retention rate

There is no single benchmark that fits every business. Retention depends on the industry, the local labor market, the share of seasonal and student workers and the type of role. Comparing yourself with a published average for a broad sector can be misleading. The most useful comparison is your own trend over time and the gap between your best and worst locations or managers. If your best location keeps 80% of its people and another keeps 55%, the difference is something you can study and fix.

Voluntary and involuntary departures

Separate employees who chose to leave from those you let go. A low retention rate driven by terminations points to hiring or performance management; one driven by resignations points to pay, schedules, management or growth. Seasonal and planned departures, such as the end of a summer contract, should be tracked separately so they do not distort the picture. See involuntary turnover.

What improves retention in hourly teams

Retention levers
Lever Practical actions
Pay Check local rates yearly; reward skills and tenure; pay accurately and on time
Schedules Post early, respect availability, allow swaps, limit last-minute changes
Managers Train supervisors in feedback, fairness and communication
Onboarding A structured first week with a buddy and clear expectations
Growth Skills ladders, cross-training and promotion from within
Recognition Specific, regular thanks that reaches every shift
Workload Staff to demand so people are not always covering gaps

Our guides on reducing turnover, why good employees leave and recognition ideas go deeper.

Putting a dollar value on retention

Retention becomes a priority when managers see what it costs. Estimate the cost of replacing one hourly employee: advertising, interview time, onboarding paperwork, training hours for the new hire and the trainer, and lower productivity in the first weeks. Multiply by the number of extra departures compared with your best location.

Example (fictional): if replacing a cashier costs about $1,500 and a store loses 12 more people a year than the company’s best store, closing half that gap saves about $9,000 a year for that store alone. Use the cost per hire calculator and onboarding cost calculator with your own numbers.

Tracking retention without a big HR system

  1. Export a list of employees with hire date, location, role, manager and termination date from your payroll or time system.
  2. At the end of each month, count the starting group and how many remain.
  3. Calculate overall, new-hire and segmented rates in a spreadsheet.
  4. Add the reason for each departure from the exit interview.
  5. Review the numbers monthly with managers and pick one action per location.

Mistakes to avoid

How EZTime helps

EZTime keeps hire dates, locations, roles and status for every employee, so retention lists are easy to pull. The factors that most affect hourly retention are built in: schedules posted early, shift swaps, time off requests handled quickly, accurate hours for payroll and a company feed for recognition.

Frequently asked questions

What is the formula for employee retention rate?

(Employees at the start of the period who are still employed at the end ÷ employees at the start) × 100.

Is retention rate the same as 100% minus turnover?

Not exactly. Turnover usually includes new hires who joined and left during the period, and it uses average headcount. The two only mirror each other when measured on the same group.

How often should I measure retention?

Annually for reporting, and monthly or quarterly for management. Track 90-day new-hire retention separately.

What is a good retention rate?

It depends on your industry and roles. Focus on your own trend and on differences between locations and managers.

Should I count seasonal workers?

Track them separately, so planned seasonal departures do not hide resignations in your core team.

Where to go next

Related reading

Fix the everyday reasons people leave

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