FA-63160 / Insurance premium rating / Member archive

Workers compensation payroll audit premium: Premium is rounded per employee instead of per class · case 05

Audits with many employees drift by cents from the class-level premium.

Member previewVariant 5 · 3 implementations · 9 checks per implementation

Case contract

Input rates {class: cents per $100 of payroll}, employees [[class, payroll cents incl. overtime, overtime cents, officer]], officer_min, officer_max. Unknown class -> 'unknown class <code>'. Remove the overtime premium portion (one third of overtime pay), then clamp officer payroll to [officer_min, officer_max]. Sum payroll by class; class premium = payroll*rate/10000 rounded half-up per class; return the total.

Why this case matters

Audited payroll premium is where overtime exclusions and officer limits routinely go wrong.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
many small payrolls in one class	`178607`	`178608`	Failed

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