Attrition Rate: Definition, Formula, and Call Center Benchmarks

Attrition rate is the percentage of a workforce that leaves over a given period, usually a year, expressed against the average number of people employed during that period. In contact centers and BPOs it is the number that determines how large the recruiting and training machine has to be, and it is the metric most often quoted when someone explains why service quality slipped in the second half of the year.

What Is Attrition Rate?

Every organization loses people. Some resign, some retire, some are dismissed, some contracts end. Attrition rate counts those departures as a share of the workforce so that a 50-person team and a 5,000-person operation can be compared. A 40 percent annual attrition rate means that, over a year, departures equalled four in ten of the average headcount.

The word "attrition" carries a specific nuance in HR. Strictly, attrition refers to departures that are not backfilled, the way a workforce shrinks through natural loss when hiring is frozen. Turnover refers to the churn of people leaving and being replaced. In contact center practice the two words are used interchangeably and both mean the churn figure, but the distinction matters when reading HR literature or benchmark reports, and it is worth confirming which meaning a source intends.

Attrition is also split by cause, because the causes call for different responses:

• Voluntary attrition: the employee chose to leave. This is the figure most benchmarks report and the one management can influence most.
• Involuntary attrition: dismissal, redundancy, end of contract. High involuntary attrition in the first 90 days usually points at recruiting or training rather than at the employees.
• Regrettable vs non-regrettable: whether the business wanted to keep the person. A center that loses its top-quartile agents at the same rate as its bottom quartile has a different problem from one that mostly loses poor performers.

Attrition Rate vs Turnover Rate vs Absenteeism Rate

These three are routinely confused in reporting, and the confusion hides real problems.

	Attrition rate	Turnover rate	Absenteeism rate
Measures	Share of workforce that left	Share of workforce that left and was replaced (in practice, the same churn figure)	Share of scheduled time lost to unplanned absence
Period	Usually annual	Annual, monthly or quarterly	Monthly or by pay period
Denominator	Average headcount	Average headcount	Scheduled hours or days
Cost shows up in	Recruiting, training, lost productivity during ramp	Same, plus vacancy cost	Overtime, service level misses, shrinkage
Leading indicator of	Engagement, pay competitiveness, management quality	Same	Attrition, burnout, poor scheduling
Typical contact center figure	30% to 45% a year	30% to 45% a year	5% to 10% of scheduled time

Absenteeism deserves its place in the comparison because it is the earliest signal of attrition. Agents who are about to resign are absent more in the two months before they leave, and teams with chronically high absence lose people at a higher rate. The absenteeism guide on this site covers that metric in its own right.

How to Calculate Attrition Rate

Attrition rate (%) = Employees who left during the period ÷ Average headcount during the period × 100

Average headcount is usually (headcount at start + headcount at end) ÷ 2, though centers with heavy seasonal hiring get a more honest figure by averaging monthly headcounts. Departures include every leaver unless the report is explicitly voluntary-only.

Worked example: a 50-agent BPO team, one year

The team started January with 50 agents and ended December with 52. During the year, 21 agents left: 16 resigned, 3 were dismissed, 2 finished fixed-term contracts. The team hired 23 to keep seats filled.

Average headcount = (50 + 52) ÷ 2 = 51
Attrition rate = 21 ÷ 51 × 100 = 41.2%
Voluntary attrition = 16 ÷ 51 × 100 = 31.4%

Of the 21 leavers, 12 left within their first six months. First-six-month attrition among the 23 new hires is therefore 12 ÷ 23 = 52 percent, which is the number the recruiting and training leads need to see, and it is invisible in the headline figure.

The cost side of the same example

Commonly cited estimates put the direct cost of replacing a contact center agent, covering recruiting, screening, training and the trainer's time, in the $4,000 to $10,000 range in the United States, with total cost including lost productivity during ramp often quoted far higher. Using a conservative $6,000 all-in figure for the team above:

21 leavers × $6,000 = $126,000 a year

That is the fully loaded cost of roughly two additional agents, spent on standing still.

Attrition Rate Benchmarks

Published figures cluster in a wide band because contact center attrition varies by country, channel and whether the center is captive or outsourced.

• ContactBabel's US Contact Center Decision-Makers' Guide, as summarized by CallForce, reports a US mean of 31 percent and a median of 24 percent on 2023 year-end data from 189 centers, with a third of respondents above 30 percent.
• The same summary cites the Philippine industry association's attrition survey at 45 percent in 2022 and 43 percent on 2023 data, and UK figures of roughly 23 to 24 percent on recent readings.
• The Quality Assurance and Training Connection (QATC) figure of 30 to 45 percent annual attrition is the range most frequently repeated across industry commentary.
• SQM Group research, cited in the same review, describes attrition under 15 percent a year as achieved by only about 5 percent of centers.

Vendor blogs quoting first-year attrition of 60 to 70 percent or higher are common; these figures rarely name a measured source and should be treated as indicative.

Why Attrition Rate Matters

Attrition sets the ceiling on quality. A center at 40 percent annual attrition has, at any moment, a large share of agents in their first six months, and new agents have longer handle times, lower first-call resolution and more escalations than tenured ones. The BPO attrition guide on this site traces how that shows up in client scorecards.

It also inflates shrinkage. Every new hire spends weeks in training and nesting, which is paid time off the phones. At 40 percent attrition, a 50-agent team runs 20 or more people through onboarding a year, and the training shrinkage alone can approach two percent of paid hours before any coaching is counted.

Finally, attrition compounds. High attrition creates understaffed intervals, which push occupancy up for the agents who remain, which raises absence and burnout, which raises attrition. The burnout statistics collected on this site document that loop.

How to Reduce Attrition Rate

1. Measure it by tenure band and by team. A 41 percent figure cannot be acted on. "52 percent of new hires leave in six months, and half of those from two supervisors' teams" can.
2. Fix the first 90 days. Realistic job previews, a proper nesting period with reduced targets and a named buddy address the largest attrition band directly.
3. Give agents schedule control. Shift bidding, swap approval and advance notice of schedules are consistently among the top retention factors in agent surveys, and they cost less than a pay rise.
4. Watch occupancy and absence as leading indicators. Teams that run above 85 percent occupancy for a quarter will lose people the following quarter. Intervening on staffing is cheaper than rehiring.
5. Separate voluntary from involuntary and address each. High involuntary attrition early is a hiring-profile problem; high voluntary attrition at 12 to 18 months is a career-path problem.
6. Exit interview everyone, and read them. Pay is usually cited, but the second and third reasons, typically supervisor relationship and schedule, are the ones the center can change.

How to Track Attrition Rate

Attrition data comes from the HR system: hire dates, leave dates, reasons and headcount by month. The calculation itself is simple; the discipline is in keeping tenure, team and reason codes accurate so the rate can be cut by segment.

HiveDesk contributes the leading indicators. Attendance records from desktop, mobile and browser clock-ins show rising lateness and absence at the individual level weeks before a resignation, and the leave management feature shows unusual patterns in time-off requests. Schedule data shows which teams are carrying the heaviest load and whether shift swaps are being granted. Timesheets give the paid-hours base for calculating training shrinkage per new hire. All of that is included at $5 per user per month. The turnover rate calculation spreadsheet on this site handles the attrition arithmetic itself, including tenure-band and monthly views.

Related Terms

• Shrinkage: where the training cost of attrition appears
• Occupancy rate: the leading indicator most centers ignore
• Presenteeism: the disengagement that precedes departure
• Tardiness and no-call, no-show: attendance signals that predict attrition
• At-will employment: the legal framework around involuntary departures in the United States

Frequently Asked Questions

What is a good attrition rate for a call center?

Published US figures put the mean around 31 percent and the median around 24 percent, with outsourced and offshore operations often running 40 percent or higher. Under 15 percent a year is achieved by very few centers. A realistic goal for most is to bring the figure into the 20s and cut first-six-month attrition in half.

How do you calculate attrition rate?

Divide the number of employees who left during the period by the average headcount for the period and multiply by 100. Average headcount is normally the start and end figures averaged, or the mean of monthly headcounts for seasonal operations.

What is the difference between attrition and turnover?

Strictly, attrition is loss that is not backfilled and turnover is churn that is replaced. In contact center practice the terms are used interchangeably for the annual departure rate. Check the definition a benchmark source uses before comparing.

What is the difference between attrition rate and absenteeism rate?

Attrition counts people who leave the organization. Absenteeism counts scheduled time lost to unplanned absence by people who are still employed. Rising absenteeism is one of the most reliable early warnings of rising attrition.

Why is call center attrition so high?

The combination of repetitive work, heavy real-time monitoring, high occupancy, limited schedule control and pay near the local market floor. Most of the levers that reduce it, schedule flexibility, sane occupancy targets and better first-90-day support, are within the center's control.

How much does agent attrition cost?

Commonly cited US estimates for the direct cost of replacing an agent run from roughly $4,000 to $10,000, with total cost including lost productivity quoted much higher. At 40 percent attrition on a 50-agent team, direct replacement cost alone approaches the cost of two full-time agents a year.

Browse more workforce and contact center terms in the glossary.