CalculatorStaffing & Capacity

Shrinkage Impact Calculator

Itemize every source of planned and unplanned shrinkage to see the true FTE cost of non-productive time. Breaks down breaks, training, coaching, PTO, absenteeism, and system downtime by impact.

T
Ted Lango
Updated May 15, 2026Source code ↗

About this calculator

Itemize every source of planned and unplanned shrinkage to see the true FTE cost of non-productive time. Breaks down breaks, training, coaching, PTO, absenteeism, and system downtime by impact.

Type: Calculator
Domain: Staffing & Capacity
Access: Free & interactive

Methodology

Shrinkage is the gap between paid hours and productive handle time. This calculator models 12 common shrinkage categories — 7 planned (breaks, lunch, training, coaching, meetings, PTO, projects) and 5 unplanned (absenteeism, tardiness, system downtime, extended breaks, personal time).

The key formula: Required FTEs = Base Requirement / (1 - Total Shrinkage%). With 100 agents needed on the phones and 28.7% total shrinkage, you actually need ⌈100 / 0.713⌉ = 141 agents scheduled. The 41 additional FTEs represent your shrinkage overhead.

How to use: Set your base agent requirement (from Erlang) and fully-loaded annual cost per FTE. Adjust each shrinkage category using the sliders — defaults are typical contact center values. The impact analysis updates in real-time showing total FTEs needed, annual cost impact, productive minutes per shift, and cost per shrinkage point.

When to apply: Annual budget planning (translating phone requirement to headcount), identifying high-impact shrinkage reduction targets, benchmarking against industry (30-35% is typical), and building the business case for initiatives that reduce unplanned shrinkage.

The sensitivity callout is particularly useful: "Each 1% of shrinkage costs $X annually" gives leaders a concrete dollar figure to evaluate investments in attendance management, schedule optimization, or IT reliability.

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