Blended Overtime Calculator
Enter one row per pay rate worked this week. Returns the §778.115 weighted regular rate, the OT premium owed, and the shortfall vs the two common employer mistakes.
Rate rows for the workweek
Enter one row per pay rate the employee worked at this week. Two-job weeks, shift differentials, and rate changes mid-week all use the FLSA weighted-averagerule per 29 CFR §778.115.
Commissions, production / attendance / safety / quality bonuses, shift differentials, and continued-employment bonuses all count per 29 CFR §§778.117 and 778.211. A true gift — both the fact and the amount decided at sole discretion close to the end of the period — doesn't. Leave at $0 if none apply.
Jurisdiction
California's Alvarado v. Dart Container, 4 Cal. 5th 542 (2018), changes the divisor for the flat-sum bonus portion to non-OT hours only and the bonus-portion OT multiplier to 1.5× (vs federal's total-hours divisor and 0.5× multiplier). The result is a higher CA OT premium per worker on any flat-sum bonus landing in an OT workweek.
Weekly pay (FLSA §778.115 correct)
$1320.00
50.0h total · weighted regular rate $24.00/h · 10.0h over 40
Math
- Straight-time pay (Σ rate × hours)
- $1100.00
- Non-discretionary supplement
- $100.00
- Weighted regular rate ((straight-time + supplement) ÷ total hours)
- $24.00/h
- OT premium owed (0.5× × 10.0h × weighted rate)
- $120.00
- Correct total
- $1320.00
Audit-risk shortfall
Up to $20.00 per workweek if the OT premium is computed against the most common wrong basis instead of the §778.115 weighted rate. Across an hourly workforce, the per-week shortfall is what wage-and-hour audits multiply into back-pay exposure.
If you pay OT at the lowest single rate worked
Common spreadsheet shortcut on multi-rate weeks. The §778.115 rule requires the weighted average, not any single rate.
If you forget the supplement in the regular rate
The §211 trap — a non-discretionary commission or bonus paid this workweek must be included before computing OT premium. Pay it on top of straight-time without including it in the regular rate, and the premium is short.
Nothing typed here is sent or saved — close the tab and your inputs are gone. The weighted-average rule follows 29 CFR §778.115; commission and bonus inclusion follows §§778.117 + 778.211. For state-stacked overtime rules (California daily + weekly + double-time, Kentucky 7th-day), use the state overtime calculator; for the single-rate + holiday-bonus case, use the holiday pay & bonus overtime calculator. Read the full methodology →
Frequently asked questions
When does the weighted-average rule apply?
Any workweek when a non-exempt employee performs two or more types of work for which different nonovertime rates have been established — a warehouse worker who also drives a delivery route, a retail clerk who picks up cashier shifts at a different posted rate, a maintenance tech whose Saturday shift differential creates a different effective rate. The §778.115 weighted-average rule is the default; the only alternative (§7(g)(2) "rate in effect") requires an advance written agreement between employer and employee and a specific set of bona-fide-rate conditions. Most multi-rate weeks fall under the default rule.
Source: 29 CFR §778.115 — Employees working at two or more rates
Are commissions part of the regular rate?
Yes. 29 CFR §778.117 states unambiguously that "Commissions … are payments for hours worked and must be included in the regular rate," regardless of formula, frequency, or method of computation. A commission paid weekly is added to the workweek's other earnings and divided by total hours to get the regular rate (§778.118); a commission paid monthly or quarterly is allocated back to the workweeks it covers and additional OT owed for each (§778.119). The "regardless of frequency" language is the anti-evasion clause — paying commissions monthly does not let an employer skip the workweek-level inclusion.
Source: 29 CFR §778.117 — Commissions in general · 29 CFR §778.118 — Commission paid on a workweek basis
Which bonuses count as "non-discretionary"?
Most of them. 29 CFR §778.211(b) sets a strict discretionary test: the employer must retain discretion over BOTH the fact of payment AND the amount "until a time quite close to the end of the period." Announce a bonus in advance — in a handbook, in a contract, at hiring, by past practice across multiple years — and discretion is abandoned. The Department of Labor's §211(c) examples explicitly include bonuses promised on hiring, bonuses from collective bargaining, attendance bonuses, production bonuses, quality bonuses, and continued-employment bonuses. A "discretionary Christmas bonus" paid every December for four years running is non-discretionary in the §211 sense regardless of how the employer labels it. True discretionary bonuses — both fact and amount decided at sole discretion close to the end of the period — are excluded from the regular rate; everything else gets included.
What's the §7(g)(2) alternative and when does it apply?
FLSA §7(g)(2) allows an alternative for multi-rate workers: paying OT at "rates not less than one and one-half times such bona fide rates applicable to the same work when performed during nonovertime hours" — the "rate in effect" method. The implementing regulation, 29 CFR §778.419, requires an advance written agreement between employer and employee, bona fide rates (each rate ≥ minimum wage and reflecting actual nonovertime compensation for that type of work), and the OT hours paid at §7(g)(2) rates equaling or exceeding the hours over the maximum-hours standard. Without the advance written agreement, §778.115's weighted-average method is mandatory. The calculator implements the default §778.115 rule because the agreement-vs-no-agreement state is something a calculator can't observe — surfacing both as selectable modes would invite mis-selection in the larger default-rule audience.
Source: 29 U.S.C. §207(g)(2) — Alternative overtime computation for multi-rate work · 29 CFR §778.419 — §7(g)(2) implementation
Does the calculator handle state-stacked overtime (California daily + 7th-day + double-time)?
Partially. The California Alvarado flat-sum bonus override IS handled — select "California (Alvarado override)" in the Jurisdiction toggle and the bonus-portion regular rate switches to the non-OT-hours divisor with the 1.5× multiplier per Alvarado v. Dart Container Corp., 4 Cal. 5th 542 (2018). What's NOT handled here: state-stacked daily OT, double-time, or 7th-consecutive-day premiums on the BASE wages — California Labor Code §510 stacks daily OT (over 8h/day), double-time (over 12h/day or 7th-day after 8h), and weekly OT under a "greater of daily or weekly" rule. Kentucky has a 7th-day premium. Alaska, Nevada, and Colorado have daily-OT thresholds. For state-stacked architecture on the base, use the state overtime calculator at /tools/state-overtime-calculator alongside this calculator's Alvarado output.
Source: Alvarado v. Dart Container Corp. of California, 4 Cal. 5th 542 (2018)
Does the calculator handle the holiday-bonus / single-rate case?
Yes, indirectly — set up the calculator with a single rate row and the holiday bonus as the supplement, and the math reproduces the canonical holiday-bonus §778.211 case. If that's the only case you need, the holiday pay & bonus overtime calculator at /tools/holiday-pay-calculator is set up for it specifically (with a Simple Holiday Pay mode for the rate × multiplier × hours case). The two calculators share the same underlying §778.211 / §778.209 math; they differ in input shape — blended is for multi-rate workweeks, holiday is for single-rate workweeks with a holiday bonus.
What about piece-rate or fluctuating-workweek arrangements?
29 CFR §778.111 covers piece-rate workers (total piece-rate earnings ÷ total hours = regular rate); 29 CFR §778.114 covers the fluctuating-workweek arrangement (the half-rate premium is the only OT premium owed because the salary is divided by ALL hours worked, including over-40 hours, which already covers the straight-time portion of OT hours at the base rate). Both have their own arithmetic that doesn't fit the row-of-{rate, hours} input model this calculator uses. Out of scope; document in methodology.
Source: 29 CFR §778.111 — Pieceworker · 29 CFR §778.114 — Fluctuating workweek method
Does the calculator save my entries?
No. Nothing typed here is sent or saved anywhere. Closing the tab clears the data. The math runs entirely on your device.
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About Clockspot
Clockspot helps small businesses track employee time and keep payroll-ready records. Used in all 50 states since 2007, we focus on getting time and pay right — including the wage-and-hour rules that shape both.
A calculator can help with one workweek. Clockspot helps employers keep the hours, jobs, rates, approvals, and payroll records connected across the whole team. See how Clockspot tracks blended overtime.