How is change-notice review workload calculated?

Every notice gets the triage hours; the deep-review share gets extra hours on top. Effective hours are 1.5 + 20% × 4 = 2.3, and 45 notices at 2.3 hours is 103.5 reviewer hours a month, 1,242 a year.

What share of change notices need deep review?

Measure it by classifying a recent month, because it depends on your supply base and criticality mix. One in five is a common steady-state figure; consolidation and transfer waves push the share toward half.

How do I staff the queue from these numbers?

Divide the monthly hours by what a reviewer can really give the duty. An engineer with change review as a quarter of their role brings about 35 hours a month, so 103.5 hours is three such quarters, not a side task.

Why does a supplier consolidation show up here?

Because every consolidation and transfer is executed as a wave of change notices that moves both levers: more notices and a higher deep-review share while parts requalify. The sensitivity example prices a 36-hour monthly increase at the same arrival rate.

Supplier Quality, Development & Audits calculator

Supplier Change Notice Workload Calculator: Triage and Deep Reviews

Size the change-notice queue with the mix that drives it. Enter monthly notices, triage hours, the deep-review share and their extra hours; monthly hours, effective loading and the deep count come back.

What this calculator does

Size the change-notice queue by its mix: triage hours plus the deep-review share.

Formula used

Effective hours per notice = base hours + deep share × extra hours
Monthly reviewer hours = notices per month × effective hours
Deep reviews per month = notices per month × deep share
Annualized hours = monthly hours × 12

Inputs explained

Change Notices per Month: Notices arriving for disposition in a typical month.
Base Hours per Notice: Triage hours every notice gets, timed on real notices.
Share Needing Deep Review: Share that needs engineering review beyond triage.
Extra Hours per Deep Review: Additional engineering hours a deep review costs.

How to use the result

Best suited to staffing the change-notice queue on its mix, pricing a consolidation wave in review hours, justifying a second reviewer.
Two tiers approximate a continuum; the occasional week-long change dominates. Uncontrolled changes, made without notifying, appear nowhere in a notice count.

Current U.S. benchmarks

U.S. manufacturing runs at 75.7% of capacity (Federal Reserve, Aug 2026). New factory orders are up 8.5% year over year (Census).

Common questions

How is change-notice review workload calculated? Every notice gets the triage hours; the deep-review share gets extra hours on top. Effective hours are 1.5 + 20% × 4 = 2.3, and 45 notices at 2.3 hours is 103.5 reviewer hours a month, 1,242 a year.
What share of change notices need deep review? Measure it by classifying a recent month, because it depends on your supply base and criticality mix. One in five is a common steady-state figure; consolidation and transfer waves push the share toward half.
How do I staff the queue from these numbers? Divide the monthly hours by what a reviewer can really give the duty. An engineer with change review as a quarter of their role brings about 35 hours a month, so 103.5 hours is three such quarters, not a side task.
Why does a supplier consolidation show up here? Because every consolidation and transfer is executed as a wave of change notices that moves both levers: more notices and a higher deep-review share while parts requalify. The sensitivity example prices a 36-hour monthly increase at the same arrival rate.

Last reviewed 2026-10-01.