Weighted Average Overtime (Blended Overtime): How to Calculate Overtime for Workers Paid Multiple Rates

Last Updated: September 2026

A crew member runs equipment on Monday, works as a laborer on Wednesday, and finishes the week on a Davis-Bacon job. By Friday, they've logged 46 hours at three different pay rates. So, which rate should the overtime premium come from?

Under the Fair Labor Standards Act (FLSA), the default answer is weighted average overtime, also called blended overtime. Instead of choosing one rate, you calculate the overtime premium from an average of every rate the worker earned that week, weighted by the hours worked at each rate.

It sounds simple, but it's one of the easiest places for payroll to go wrong. Choosing a single rate without an advance agreement can underpay workers every week they work overtime. On prevailing wage projects, those errors also carry through to your certified payroll reports. This guide walks through what weighted average overtime is, how to calculate it step by step, when the alternative method applies, and how it works on prevailing wage jobs.

Navigate This Article

• What Is Weighted Average Overtime?
  • When Does It Apply?
  • Is It Legal?
• How Do You Calculate Weighted Average Overtime?
  
• Weighted Average Overtime vs. the Alternative Method
• How Does Weighted Average Overtime Work on Prevailing Wage Projects?
• Which State Overtime Rules Change the Calculation?
• Common Weighted Average Overtime Mistakes
• Frequently Asked Questions
• Get Weighted Average Overtime Right Every Week

Key Takeaways

• Weighted average overtime is the FLSA default for non-exempt workers paid two or more rates in one workweek (29 CFR 778.115).
• The regular rate equals total straight-time earnings divided by total hours worked, including overtime hours.
• The overtime premium is half the regular rate for each hour over 40, because straight-time pay already covers every hour.
• Nondiscretionary bonuses raise the regular rate and must be included.
• On prevailing wage projects, only the base wage goes into the average. Fringe benefits are paid at straight time for every hour.

What Is Weighted Average Overtime?

Weighted average overtime is the FLSA method for calculating overtime when a non-exempt employee earns two or more hourly rates in the same workweek. The employee's regular rate is the weighted average of those rates, found by dividing total straight-time earnings by total hours worked. Each overtime hour then earns an additional half of that regular rate.

The Department of Labor describes this method in 29 CFR 778.115, which covers employees working at two or more rates. In payroll and construction, you'll also hear it called blended overtime, a blended rate, or weighted overtime. They all describe the same calculation.

The key input is the regular rate of pay. It's more than a worker's hourly wage. Under the FLSA, the regular rate includes all straight-time compensation for the week, including nondiscretionary bonuses such as safety, attendance, or production incentives. A narrow set of payments is excluded: expense reimbursements, true premium pay, discretionary bonuses, gifts, and pay for time not worked such as vacation, holiday, or sick leave. The regular rate can also never fall below the applicable minimum wage.

When Does Weighted Average Overtime Apply?

Weighted average overtime applies any time a non-exempt worker earns more than one rate in a workweek that includes overtime. In construction, that happens often. Common scenarios include:

• Multiple classifications: a worker spends part of the week as an equipment operator and part as a laborer, each with its own rate.
• Prevailing wage and private work: a worker splits the week between a public works project and a private job.
• Multiple jobsites or jurisdictions: a worker moves between projects that pay different rates.
• Bonuses: a worker earns a nondiscretionary bonus in an overtime week, even at a single hourly rate.

Salaried non-exempt employees are covered too. Their hourly regular rate is their weekly salary divided by the number of hours the salary is meant to cover.

Is Blended Overtime Legal?

Yes. Weighted average overtime is the standard FLSA method for workers paid at multiple rates, not a workaround.

The confusion usually comes from a different practice: paying a single "blended" hourly rate that is meant to absorb overtime, with no separate premium. That approach is not compliant. The blended rate is the base for calculating the overtime premium. It never replaces the premium.

How Do You Calculate Weighted Average Overtime?

To calculate weighted average overtime, add up all straight-time earnings for the week, divide by total hours worked to get the regular rate, then pay half that rate for every hour over 40. Here are the four steps.

Step 1:

Calculate total straight-time earnings. Multiply the hours worked at each rate by that rate, then add the results together. Add any nondiscretionary bonuses earned that week.

Step 2:

Find the weighted average regular rate. Divide total straight-time earnings by all hours worked that week, including overtime hours.

Step 3:

Calculate the overtime premium. Multiply the regular rate by 0.5, then multiply by the number of hours worked over 40.

Step 4:

Calculate total pay. Add the overtime premium to total straight-time earnings.

Why 0.5x and not 1.5x? Step 1 already pays every hour, including overtime hours, at its own straight-time rate. That covers the "1" in time and one-half. The only thing left to add is the half-time premium.

Weighted Average Overtime Example

A worker spends 26 hours as an equipment operator at $38.00 per hour and 20 hours as a laborer at $29.00 per hour, for 46 hours total. That means 6 overtime hours.

Premium calculated from the unrounded rate ($34.087 x 0.5 x 6).

Now compare that to a common shortcut. If payroll bases the premium on the lower laborer rate instead ($14.50 x 6 hours = $87.00), the worker is short $15.26 for the week. That may look small on one check, but it adds up quickly across a full crew and a full year of overtime.

Example With a Nondiscretionary Bonus

Take the same week and add a $100 safety bonus. The bonus adds no hours, but it does raise the regular rate.

Leaving the bonus out of the regular rate would underpay the overtime premium by $6.52 that week. It's one of the most common regular rate errors, and one that auditors look for.

Weighted Average Overtime vs. the Alternative Method

The FLSA allows one alternative to weighted average overtime: paying overtime at one and one-half times the rate for the work actually performed during the overtime hours. Under 29 CFR 778.419, this method is only allowed if the employer and employee agree to it before the work is performed.

Check your state first. Several states explicitly require the weighted average method, including California, Colorado, Massachusetts, Nevada, New York, and Oregon. In those states, the alternative method may not be available even with a written agreement.

Neither method always pays more. The result depends on which work lands in the overtime hours. If you use the alternative method, put the agreement in writing so you can prove it existed before the work began.

How Does Weighted Average Overtime Work on Prevailing Wage Projects?

On prevailing wage projects, the weighted average uses only base hourly wages. Fringe benefits are paid separately, at each classification's straight-time fringe rate, for every hour worked. That separation is where many payroll teams run into trouble.

For the full rules on Davis-Bacon and state prevailing wage overtime, see our guide to overtime pay on prevailing wage projects.

Only the Base Wage Goes Into the Weighted Average

A wage determination lists two separate components for each classification: a base hourly rate and a fringe benefit rate. When overtime is involved, they're handled differently:

• Base wages go into the weighted average and the overtime premium.
• Fringe benefits are owed for every hour worked, including overtime hours, but always at straight time. They are never averaged and never multiplied for overtime.

Under the Davis-Bacon regulations at 29 CFR 5.32, fringe benefit amounts are excluded from the regular rate used to calculate overtime.

Example: Splitting a Week Between Prevailing Wage and Private Work

An electrician works 24 hours on a Davis-Bacon project ($52.40 base plus $18.75 fringe) and 22 hours on a private job at $40.00 per hour. That's 46 hours total and 6 overtime hours.

Notice that the fringe is paid only on the prevailing wage hours and stays out of the average entirely.

Federal contracts covered by the Contract Work Hours and Safety Standards Act (CWHSSA) require time and one-half the basic rate of pay for overtime on covered work. When overtime hours fall on the covered project, confirm with your contracting agency how the weighted average applies. State prevailing wage agencies may also have their own rules.

How Weighted Average Overtime Shows Up on Certified Payroll

On prevailing wage projects, overtime hours and rates are reported by project on the WH-347 or your state's certified payroll form. An error in the weighted average doesn't stay on the paycheck. It carries onto every certified payroll report for that week, which creates audit exposure on top of the underpayment.

That's why the calculation has to be right before payroll runs. WageIQ by Points North stores your applicable rates and calculates correct wages before payroll runs, so your team can review overtime across multiple rates and classifications before checks go out. Prefer not to manage rates in-house? Our Managed Services team partners with you to build and maintain rate tables tailored to your business and proactively monitors for rate changes.

Which State Overtime Rules Change the Calculation?

State overtime laws can change which hours count as overtime, which changes Step 3 of the calculation. When federal and state rules differ, follow the rule that is more favorable to the worker.

Several states trigger overtime based on daily hours, not just weekly totals. California, for example, requires overtime after 8 hours in a workday, double time after 12 hours, and overtime on the first 8 hours of the seventh consecutive day worked in a workweek. Alaska, Nevada, and Colorado have their own daily triggers.

A note on California. The FLSA calculates the overtime premium as half the regular rate, added on top of straight-time pay already earned. California's rule is worded differently. The Division of Labor Standards Enforcement requires overtime at "not less than one and one-half times the employee's regular rate of pay," which is commonly interpreted as replacing the base rate for overtime hours entirely (1.5 x the regular rate).

Those two readings can produce different totals. In the equipment operator example above, if the 6 overtime hours were laborer hours, the FLSA method pays $1,670.26 and the California reading pays $1,700.78, a difference of $30.52 for one worker in one week.

Because California's Private Attorneys General Act (PAGA) lets employees bring wage claims on behalf of the state, many employers apply whichever calculation results in the higher payment. If you run projects in California, confirm your approach with counsel.

Common Weighted Average Overtime Mistakes

These errors show up often in audits, and most are preventable:

• Using a single rate for the premium. Payroll often defaults to the lowest or most recent rate. Without an advance agreement under the alternative method, use the weighted average.
• Averaging across a biweekly pay period. The FLSA defines overtime by workweek. A worker with 35 hours one week and 45 the next is owed 5 overtime hours, even though the two-week average is 40.
• Leaving bonuses out of the regular rate. Nondiscretionary bonuses must be added to straight-time earnings for the week they were earned.
• Including fringes in the average. On prevailing wage work, only base wages go into the weighted average. Fringes are paid at straight time for every hour.
• Not tracking hours by rate and project. If time records don't separate classifications and projects, the calculation can't be verified in an audit.
• Ignoring state daily overtime. In daily overtime states, a worker can earn overtime in a week under 40 hours.

Frequently Asked Questions

Get Weighted Average Overtime Right Every Week

Weighted average overtime comes down to a simple formula: total straight-time earnings, divided by total hours, with half that rate paid for each overtime hour. Accurate results depend on tracking every hour by rate, classification, and project, including bonuses and, on prevailing wage work, keeping fringes out of the average.

Points North offers two options based on how much of the process you want to manage in-house. With WageIQ, rates and wage calculations become manageable by your team, with correct wages calculated before payroll runs. With Managed Services, our team partners with you to build and maintain rate tables and monitor for rate changes.

Want to see how it works for your crews? Schedule a demo using the form below to see how WageIQ stores your applicable rates and calculates correct wages, including overtime across multiple rates, before payroll runs.