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FLSA Overtime Pay Calculator with State Daily OT Rules

Calculate Weekly and Daily Overtime for CA, AK, NV, CO with Anti-Pyramiding, Prevailing Wage Fringe, and 6 Schedule Presets

Free FLSA overtime calculator built for payroll managers, construction PMs, and plant supervisors who deal with overtime every single week. Enter hours by day, select your state, and get a complete breakdown of straight time, daily overtime, weekly overtime, and double time with anti-pyramiding logic that prevents double-counting. Supports California's daily OT thresholds (over 8 hrs = 1.5x, over 12 hrs = 2x, 7th consecutive day rules), Alaska's daily OT, Nevada's daily OT, and Colorado's 12-hour rule alongside standard federal 40-hour weekly OT.

Most payroll software treats overtime as a black box. This calculator shows you exactly which hours hit which bucket so you can verify your payroll processor's output or catch mistakes before checks go out. It handles prevailing wage fringe offsets where the fringe portion stays flat and only the base rate gets the 1.5x multiplier. Six built-in schedule presets (5x8, 4x10, 9/80, 3x12, Panama, DuPont) let you model different rotation options and see the OT cost impact before you commit to a schedule change.

Pro Tip: On prevailing wage jobs, fringe is NOT multiplied for overtime. If total prevailing wage is $65/hr ($45 base + $20 fringe), OT rate is $45 x 1.5 + $20 = $87.50, NOT $65 x 1.5 = $97.50. That $10/hr difference across a 20-person crew working 10 hours of OT per week is $2,000/week in overbilling if you get it wrong. Always split base and fringe before applying the OT multiplier.

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Overtime Pay Calculator
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How It Works

  1. Select Your State

    Choose your state to apply the correct daily and weekly OT rules. California, Alaska, Nevada, and Colorado have daily overtime thresholds on top of the federal 40-hour weekly rule. All other states default to federal rules only.

  2. Enter Base Pay Rate

    Input the straight-time hourly rate. For prevailing wage jobs, enter the base rate and fringe amount separately so the calculator applies the OT multiplier only to the base portion.

  3. Input Daily Hours or Select a Preset

    Enter hours worked for each day of the week, or pick one of the 6 schedule presets (5x8, 4x10, 9/80, 3x12, Panama, DuPont) to auto-fill a typical rotation pattern.

  4. Review the OT Breakdown

    The calculator separates straight time, daily OT (1.5x), daily double time (2x), and weekly OT hours. Anti-pyramiding logic ensures hours already counted as daily OT are not double-counted toward the weekly 40-hour threshold.

  5. Check Prevailing Wage Fringe Handling

    If you entered a fringe amount, verify the OT calculation applies the multiplier to the base rate only. The fringe stays flat at 1x for all overtime hours per Davis-Bacon rules.

  6. Export or Share Results

    Export the pay breakdown as a PDF for payroll records, or share the calculation via URL so a coworker or auditor can review the exact same inputs and results.

Built For

  • Payroll clerks verifying weekly OT calculations before cutting checks for a 50-person construction crew
  • California contractors figuring out daily OT vs weekly OT when crews work 4x10 schedules with occasional Saturday makeup days
  • Plant managers comparing the OT cost of a 5x8 schedule vs a 4x10 schedule to decide which rotation saves money
  • Prevailing wage contractors splitting base and fringe to avoid overpaying OT on Davis-Bacon jobs
  • HR managers auditing past pay periods for FLSA compliance before a Department of Labor investigation
  • Union stewards checking that 7th-day premium pay and daily double time are calculated correctly in California
  • Construction PMs modeling the payroll cost of weekend overtime to decide if a second shift is cheaper than Saturday work

Features & Capabilities

State-Specific Daily OT Rules

Built-in rules for California (8hr daily OT, 12hr double time, 7th day rules), Alaska (8hr daily), Nevada (8hr daily), and Colorado (12hr daily). Federal 40-hour weekly OT for all other states.

Anti-Pyramiding Logic

Prevents double-counting hours that qualify as both daily and weekly overtime. Daily OT hours are excluded from the weekly 40-hour OT threshold so you never pay 1.5x twice on the same hour.

Prevailing Wage Fringe Handling

Separates base rate from fringe for Davis-Bacon and state prevailing wage jobs. Only the base rate gets the OT multiplier while fringe stays at 1x per federal requirements.

6 Schedule Presets

One-click presets for 5x8, 4x10, 9/80 compressed, 3x12, Panama (2-2-3), and DuPont rotations. Instantly see how each schedule pattern affects weekly OT hours and cost.

Day-by-Day Breakdown

Shows straight time, OT, and double time hours for each individual day plus weekly totals. Makes it easy to spot exactly which day pushed a worker into overtime.

PDF Export and URL Sharing

Export the complete OT breakdown as a branded PDF for payroll files or share via URL for auditor review.

Frequently Asked Questions

California requires 1.5x pay for hours worked beyond 8 in a single workday and 2x pay for hours beyond 12. On the 7th consecutive day in a workweek, the first 8 hours are paid at 1.5x and anything over 8 hours on that 7th day is paid at 2x. These daily OT rules apply on top of the standard 40-hour weekly threshold, but anti-pyramiding prevents double-counting hours already paid at the daily OT rate.
Anti-pyramiding means you do not stack daily overtime on top of weekly overtime for the same hours. If a worker gets daily OT for working 10 hours on Monday (2 hours at 1.5x), those 2 daily OT hours do not also count toward the 40-hour weekly OT threshold. Without anti-pyramiding, you would end up paying a premium twice on the same hour, which is not required under FLSA or any state law.
On Davis-Bacon prevailing wage jobs, only the base hourly rate gets the 1.5x overtime multiplier. The fringe benefit portion stays flat at 1x regardless of overtime. For example, if the prevailing wage is $72/hr ($50 base + $22 fringe), the OT rate is $50 x 1.5 + $22 = $97/hr, not $72 x 1.5 = $108. Getting this wrong on a large crew can mean thousands of dollars in overpayment or underpayment per week.
Under federal FLSA, yes. Federal law only requires OT after 40 hours in a workweek, so four 10-hour days equals exactly 40 hours with no OT. However, in California, daily OT kicks in after 8 hours, so a 4x10 schedule means 2 hours of daily OT per day (8 hours total weekly OT) unless the employer adopts an Alternative Workweek Schedule (AWS) through a proper employee vote process.
As of 2025, California has the most comprehensive daily OT rules (8hr OT, 12hr double time, 7th day premium). Alaska requires 1.5x after 8 hours in a day. Nevada requires 1.5x after 8 hours if the employee is paid less than 1.5x minimum wage. Colorado requires 1.5x after 12 hours in a day. All other states follow federal rules, which only require OT after 40 hours in a workweek with no daily threshold.
A 9/80 schedule alternates between a 44-hour week (four 9-hour days plus one 8-hour day) and a 36-hour week (four 9-hour days with one day off). To avoid weekly OT, employers typically define the FLSA workweek to split the 8-hour Friday between two workweeks (4 hours in each), making both weeks exactly 40 hours. The calculator models this split so you can see the cost correctly.
Disclaimer: This calculator is for estimation and payroll verification purposes. Overtime laws vary by state and can change. Always confirm current state and local overtime requirements with your labor attorney or state department of labor before relying on these calculations for actual payroll.

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