FA-93922 / Shift rostering labor rules / Member archive

Spread premium stacked with split premium · case 02

Long split days receive both premiums although the spread premium replaces the split premium.

Member previewVariant 2 · 3 implementations · 8 checks per implementation

Case contract

Worked segments [start, end] of one workday (unordered, possibly overlapping) and a minimum wage in cents. Overlapping or touching segments merge. Spread is last end minus first start. Each gap longer than 60 minutes is a split. A spread over 600 minutes earns one hour of minimum wage and replaces any split premium; otherwise each split earns min_wage // 2, for at most two splits. Return [spread, splits, premium].

Why this case matters

Spread-of-hours and split-shift premiums are frequent roster-pay rules that depend on correct interval handling.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
regression: premium precedence 1	`[1021, 2, 3200]`	`[1021, 2, 1600]`	Failed

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