FA-94054 / Shift rostering labor rules / Member archive

Differential pay truncated to the cent · case 04

Shift pay that ends in half a cent or more loses a cent.

Member previewVariant 4 · 3 implementations · 8 checks per implementation

Case contract

Shift [start, end] in minutes from Monday 00:00 and a base rate in cents per hour. Each minute earns base * (100 + pct) / 6000 cents where pct is 10 for 15:00-23:00, 15 for 23:00-07:00, else 0; on Saturday and Sunday (days 5 and 6) pct is the larger of that value and 12 (differentials do not stack). The exact total is rounded half up to a cent once.

Why this case matters

Shift differential calculations are where roster data meets payroll; stacking and day attribution errors are common.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
regression: differential rounding 1	`22288`	`22289`	Failed

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