Processes, procedures & operating systems · Core
Maker-checker
Also called: four-eyes principle
ELI5
A control separating preparation from independent review or approval.
Used in conversation
“The number is useful only if everyone calculates maker-checker the same way.”
Pitch context
You will see “Maker-checker” in operating plans, procurement packs, supplier reviews and supply-chain reports when the discussion reaches processes, procedures & operating systems.
Why it matters: In processes, procedures & operating systems, the definition can change ownership, capacity, process, cost or safety decisions.
Sources & evidence · 3
Direct term-level sources and supporting source families.
- U.S. Bureau of Labor Statistics — Productivity programmeDirect source · primary · checked 2026-08-16
- U.S. Acquisition.gov — Federal Acquisition Regulation Part 15 — Contracting by NegotiationDirect source · primary · checked 2026-08-16
- UK Government — Groceries Supply Code of PracticeSupporting source family · primary · checked 2026-08-16