Davis-Bacon overtime rules and requirements contractors should know

For federally funded jobs, the Davis-Bacon Act requires employers to pay laborers at least the prevailing wage and full fringe benefits for the local area. Managing Davis-Bacon payroll requirements is complex on its own, but the math gets harder once overtime enters the picture.

Contractors have to pay employees 1.5x their rate for each hour worked over 40. But changing job classifications and fringe benefit exclusions make it easy to get the math wrong.

Below, we’ll break down exactly how Davis-Bacon overtime rules work and how construction payroll teams can calculate pay correctly.

Overtime requirements contractors must follow on Davis-Bacon jobs

It’s a common misconception to think the Davis-Bacon Act itself dictates overtime rules on federally funded construction projects, but it only regulates employee hourly rates and fringe benefits. The overtime requirements on these jobs come from the Contract Work Hours and Safety Standards Act (CWHSSA) and the Fair Labor Standards Act (FLSA).

Here are the basic overtime requirements construction companies have to follow on federal projects:

• The 40-hour trigger: Employers must pay staff at least 1.5x their base hourly rate for any hours worked over 40 in a single workweek.
• Fringe benefit exclusions: For Davis-Bacon projects, contractors are required to offer workers certain benefits or a cash equivalent on top of hourly base pay. Companies paying for fringe benefits in cash should exclude this amount from their overtime calculations. If an employee makes $40 per hour base wage and $10 for fringe benefits, they’ll only earn time and a half on the $40.
• Fringe payments on all hours: Companies need to offer full prevailing fringe benefits for every hour employees work, including overtime hours.
• Combined covered hours: When one person works on multiple covered federal projects for a single employer during a workweek, all the employees’ hours on those jobs count toward the CWHSSA overtime threshold.
• Weekly certified reporting: Employers are required to submit certified payroll reports every week. These show calculations for each employee’s straight time and overtime pay alongside details like employee classifications, fringe benefits, and tax rates.
• Local rate requirements: If the jurisdiction has a higher overtime standard than the federal government, follow the local law. For example, California requires companies to pay double wages for any hours worked over 12 in one day. Even though federal rules say employers have to pay 1.5x the base rate for each hour of overtime, contractors in California need to pay 2x for eligible hours.

Note that CWHSSA applies to federal Davis-Bacon and McNamara-O’Hara Service Contract Act contracts over $100,000 that fall under Federal Acquisition Regulation procurement. If a contract is smaller, the FLSA 40-hour rule likely still applies, but the CWHSSA penalty structures don’t.

The cost of not following overtime regulations

Contractors who don’t correctly follow overtime laws may face: 

• Compliance audits and back wage charges 
• CWHSSA penalties of $33 per day, per violation
• Bans from bidding on future government contracts
• Lost trust with current and future employees

Types of Davis-Bacon and prevailing wage overtime rules

Below are a few specific overtime scenarios teams may encounter while running payroll. 

Standard weekly overtime

The baseline federal requirement states that workers earn 1.5x their rate for each hour worked over 40. For Davis-Bacon projects, employers apply the 1.5x calculation to employees’ base rates, not their total hourly rate including fringes. 

Blended rates

When employees work in multiple classifications or on multiple projects in the same week, they may earn different base rates for each. Say a worker makes $60 per hour for laying tile and $40 per hour for hanging drywall. If they do both tasks in a single week, employers need to blend that worker’s wages into an average hourly rate before calculating overtime. 

This also applies if employees work on Davis-Bacon and non-Davis-Bacon projects in the same week. Contractors would find the average of the prevailing wage and private rates. 

To find this blended rate, add up the employee’s total base earnings for the week, and divide them by the number of hours worked to find the average. Then, calculate overtime based on this figure. 

Companies can also pay the higher of the two rates across the board. This eliminates the blended rate calculation and guarantees compliance with the overtime minimum.

State regulations

Some state overtime regulations differ from federal rules. When that happens, contractors have to follow the stricter of the two. Here are a couple of ways states set overtime rules:

• Little Davis-Bacon laws: This is the nickname for state-specific Davis-Bacon regulations. Some Little-Davis Bacon laws mention overtime, but not all. Take Oregon, for instance. Contractors working on projects subject to prevailing wage regulations must pay overtime for each hour worked over eight in one day. This is true even if the employee hasn’t worked more than 40 hours in the week.
• General state overtime rules: Some states’ overtime rules apply to more than just public works jobs. Think of these regulations like Little FLSA laws; most companies need to follow them. For example, Colorado employers pay employees overtime for each hour worked over 12 in a day, even if they haven’t worked more than 40 during the week.

How to calculate Davis-Bacon wage overtime

Here’s how to calculate overtime in different situations. 

Standard weekly overtime

Simply multiply the hourly rate by 1.5. For a worker making $40 per hour, their overtime rate would be: 

$40 x 1.5 = $60 per hour for overtime

Blended rates

Overtime calculations get more complex when rates change, like when an employee serves as both a journeyman and a foreman during the same week. 

In this situation, use a weighted average. Find the total straight-time pay for the workweek, and divide it by the total hours worked to get a blended rate. Then, use that average to calculate the extra 50% premium for the overtime hours.

Say a worker spends 30 hours of their week in a role that pays $30 per hour and another 15 in a role that pays $60 per hour. Their base rate would be:

(($30 x 30) + ($60 x 15)) / 45 = $40 per hour

Then, calculating overtime is the same as before. Multiply the hourly rate by 1.5 to get their overtime rate: 

$40 x 1.5 = $60 per hour for overtime

State regulations

State-specific rules also play a role here. Say a state requires employers to pay employees 1.5x their base rate for each hour worked over eight in one day. A worker who puts in 12 hours on Monday has already earned four hours of overtime, even if they don’t reach 40 hours worked for the week. To meet the local standards, contractors need to pay 1.5x the base rate for those four hours.

Imagine the employee in this example makes $30 per hour. Here’s what their pay would look like for Monday’s work:

12 − 8 = 4 hours of overtime

$30 x 8 = $240 for regular hours

($30 x 4) x 1.5 = $180 for overtime hours

$240 + $180 = $420 total for Monday

Overlapping overtime rules and hours

What happens when overtime rules and hours overlap? There are a few answers:

• Conflicting federal and local laws: Employers must follow the stricter rules.
• Daily and weekly overtime hours conflicting: Overtime hours don’t count toward both daily and weekly limits. They only apply once. For example, Alaska requires employers to pay 1.5x for any hours over eight in a day. Say an employee works 12 hours on Monday, earning four hours of daily overtime. If the worker finishes the week at 45 total hours, the five hours over 40 are also overtime, but the four daily hours already paid don’t count again toward the weekly total. The employee would receive five hours of overtime total for the week.

Common challenges with Davis-Bacon overtime calculations

Even the most organized finance teams face hurdles when managing Davis-Bacon requirements around pay rates and overtime. Seemingly small errors lead to big problems during payroll. 

Here are a few overtime calculation challenges to look out for:

• Mixing base rate and fringe rates: Many teams accidentally include their fringe rate when calculating the 1.5x premium. This results in overpayment, affecting the project’s bottom line. It also means employers may need to deduct employees’ future wages to make up the difference, and no one wants to get a smaller paycheck than they’re expecting. More than that, contractors might not even be able to recover the lost wages, as federal and state rules regulate these deductions. 
• Weighted average mistakes: Manually calculating the correct blended rate for workers with multiple rates is prone to errors. Using the wrong average might mean contractors underpay employees, leading to expensive penalties. 
• The “site of the work” trap: The Davis-Bacon Act only covers time spent at the jobsite, but CWHSSA’s overtime laws are broader. If a worker spends time both on and off-site during a covered project, all hours count toward overtime. For example, an employee who spends 35 hours framing and 10 hours shopping for lumber would earn five hours of overtime.
• Certified payroll discrepancies: When teams handle certified payroll reports manually, it’s easy to make mistakes like incorrectly calculating overtime or paying employees the wrong rates. Errors like this can lead to fines, project delays, and bans from bidding on future projects.
• Data silos: When time data doesn’t flow into payroll, there’s more room for error. Manually reconciling this information across systems – or worse, on paper – makes it easy to misclassify employees and miscalculate pay.
• State rule overlap: Contractors often follow federal rules by default and miss stricter state mandates. Failing to follow all relevant rules causes compliance issues.

Miter applies the correct overtime logic to every project, including custom rules for different states or unions. Easily manage fringe calculations and weighted averages for split classifications without picking up a calculator. Generate accurate certified payroll instantly, saving hours every week.

With Miter, hours worked flow into weekly payroll, eliminating manual tracking. Set up wage determinations and classifications once, and let the system handle the rest. By integrating time tracking with construction payroll, companies have fewer data gaps that lead to audits. Team members spend more time focused on work that moves the business forward, and employers get peace of mind knowing their compliance is solid.