Static educational checklist — not a calculator. No hours inputs, no half-time OT engine, no live regular-rate math. Spot common fluctuating workweek (FWW) red flags under 29 CFR § 778.114. Distinct from donning/doffing, compensatory-time, sleep-time, spread-of-hours, training-time, continuous-workday, on-call/waiting, travel-time, meal/rest, tip-credit, recordkeeping, child-labor, final-paycheck, and OT pay-stub pages.
Federal baseline
Under 29 CFR § 778.114, an employer and a nonexempt employee may agree that a fixed salary covers all straight-time hours in a workweek where hours fluctuate, so long as the salary is large enough to pay at least the applicable minimum wage for every hour worked and the employee clearly understands the arrangement. Overtime is then paid as an additional half-time premium on hours over 40 (regular rate = salary ÷ hours worked that week; OT premium = 0.5 × regular rate × OT hours). This page does not compute half-time premiums or validate a specific payroll run.
Checklist — fluctuating workweek red flags
No fixed salary for fluctuating hours. Flag “FWW” labels on hourly, day-rate, piece-rate, or commission-only workers whose straight-time pay still moves with hours punched. The method presupposes a genuine fixed salary that does not shrink when the week is short.
No clear mutual understanding before work. Flag handbooks or offer letters that never explain that the salary covers fluctuating straight-time hours and that OT is half-time only. Silent or disputed “understandings” are a classic FWW failure.
Salary too low to clear minimum wage on long weeks. Flag fixed salaries that, when divided by actual hours in a heavy week, fall below the federal (or higher state) minimum wage for every hour worked — a hard stop for § 778.114.
Paying 1.5× (or time-and-a-half on an hourly rate) while calling it FWW. Flag payrolls that mix labels: true FWW OT is an additional half-time premium on top of the salary already covering straight time, not a separate 1.5× hourly OT stack as if the worker were pure hourly.
Bonuses, premiums, or commissions that break the method. Flag non-excludable production bonuses, shift differentials, or commissions paid alongside the “fixed” salary without rebuilding the regular rate correctly — or without recognizing that some pay practices take the arrangement outside § 778.114.
Salary deductions for absences / short weeks. Flag docking the fixed salary for partial-day or whole-day absences, or for weeks under a target hour count, in ways that destroy the “fixed salary for all hours” premise of FWW.
Fixed schedule mislabeled as “fluctuating.” Flag roles that always work the same 40 / 45 / 50 hours with no genuine week-to-week fluctuation, yet payroll still applies half-time FWW math. The regulation contemplates hours that actually fluctuate.
Confusion with Belo plans, day rates, or piece rates. Flag employers that cite § 778.114 for guaranteed Belo contracts (§ 778.402 et seq.), pure day-rate OT (§ 778.112), or piece-rate OT (§ 778.111). Those are related regular-rate doctrines — not interchangeable with FWW.
Exempt salary-basis rules treated as FWW. Flag HR that conflates Part 541 white-collar salary-basis / exemption tests with nonexempt fluctuating-workweek overtime. FWW is an overtime-pay method for nonexempt employees, not an exemption shortcut.
State / local overlays ignored. Flag federal-only reliance where a state restricts or refuses the half-time FWW method, requires different OT premiums, or imposes stricter salary / agreement rules. Always check the stricter overlay before labeling a pay plan “FWW-compliant.”