Shrinkage (Call Center / WFM)
Definition
Shrinkage (Call Center / WFM) — Shrinkage is the percentage of paid agent time that is unavailable to handle customer contacts — lost to breaks, meetings, training, coaching, system downtime, absence, and paid leave. Workforce-management teams add it to staffing calculations so enough agents are scheduled; it commonly falls near 30–35%.
Shrinkage is the reason a contact center that needs 100 agents on the phones has to roster far more than 100. It captures all the paid time agents spend not handling contacts — and getting it wrong is one of the fastest ways to miss a service level or blow a staffing budget.
How It Is Calculated
Benchmarks
Benchmark ranges below are industry references, not fixed rules — they vary by sector, channel, and how each firm measures. Use them as directional context.
- ~30–35% is the commonly cited industry range: 'Most contact centre professionals seem to agree that shrinkage normally comes out between 30 and 35%' (Call Centre Helper, updated 30 Jul 2026).
- ~35% average shrinkage reported by Dimension Data's Global Benchmarking Report, cited by Call Centre Helper.
- High-performing centers often run ~20–25%, with many teams targeting 20% or lower; above ~35% typically signals operational strain (industry WFM sources incl. Intradiem, The Level.ai).
Key Points
- Shrinkage is usually split into external shrinkage (time not on the clock at all — absence, holiday/PTO, sickness, lateness) and internal shrinkage (paid but off the phones — breaks, meetings, training, coaching, admin). (Call Centre Helper, 'What is Contact Centre Shrinkage and How to Calculate It?', 2026-07-30)
- The standard formula divides total shrinkage hours (external + internal) by total available/paid hours, times 100. (Call Centre Helper, 2026-07-30)
- Call Centre Helper reports that most contact-center professionals see shrinkage land between 30% and 35%; it declines to prescribe a single target, noting shrinkage varies by organization and time period. (Call Centre Helper, 2026-07-30)
- Dimension Data's Global Benchmarking Report is cited by Call Centre Helper as giving an average shrinkage figure of ~35%. (Dimension Data Global Benchmarking Report, via Call Centre Helper, 2026)
- Shrinkage is a required input to workforce-management staffing: if 100 agents are needed on the phones at 30% shrinkage, roughly 143 must actually be rostered (100 ÷ (1 − 0.30)) to cover the unavailable time. (WFM staffing practice, per Intradiem, 2026)
Related concepts: Average Handle Time, Service Level Agreement, First Call Resolution.
Related Terms
Average Handle Time (AHT) is the mean time an agent spends fully handling one customer contact — the sum of talk time, hold time, and after-call (wrap) work, divided by the number of contacts handled. It is a core contact-center efficiency and staffing metric, commonly benchmarked near six minutes.
Service Level AgreementA Service Level Agreement is a formal contract between a service provider and client that defines measurable performance standards, response times, quality benchmarks, and penalty clauses for outsourced work. In remote staffing, SLAs typically specify uptime targets, response and resolution windows, and quality metrics. SLA breaches trigger contractual fee reductions.
First Call Resolution (FCR)First Call Resolution (FCR) is a contact-center metric measuring the percentage of customer issues resolved during the initial interaction, with no callback, transfer, or follow-up required. It is a leading indicator of customer satisfaction and operating efficiency, since repeat contacts raise cost and erode loyalty.