Davis-Bacon and Flaggers: How Prevailing Wage Coverage Works for Traffic Control Crews

Traffic control companies get pulled into federal prevailing wage rules more often than they expect. You are a subcontractor on a paving job. The paving job has federal money in it. A wage determination was attached to the prime contract, and a flagger rate is on it.

The questions that follow are practical. Does the rate apply to your crew? Does it apply to the flagger stationed a quarter mile up the road? What records do you owe the prime, and how often?

This post explains how the Department of Labor describes coverage for flaggers and traffic control workers, using the regulation and the Department's own published explanations. It is general information about how the rules are written. It is not legal advice, and it does not tell you whether a particular project or worker is covered. That depends on the contract, the funding and the facts. Requirements vary, so verify them with the contracting agency, the Wage and Hour Division or your attorney.

It also contains no wage figures. Prevailing wage rates differ by county, by type of construction and by date. The only rate that matters is the one in the wage determination attached to your contract.

What Davis-Bacon is, briefly

The Davis-Bacon Act applies to federal construction contracts. Under 40 U.S.C. 3142, the advertised specifications for every contract in excess of $2,000 to which the federal government is a party, for construction, alteration or repair of public buildings and public works, must contain a provision stating the minimum wages to be paid to various classes of laborers and mechanics.

Those minimums are the prevailing wages. The same section says they are based on the wages the Secretary of Labor determines to be prevailing for corresponding classes of laborers and mechanics on similar projects in the area where the work is performed.

Most highway work is not a direct federal contract. It is a state or local contract paid partly with federal money. That is where the Related Acts come in. Congress has attached Davis-Bacon wage requirements to many federal funding programs. For highways, 23 U.S.C. 113 directs that laborers and mechanics employed by contractors or subcontractors on construction work performed on federal-aid highway projects be paid wages at rates not less than those prevailing on the same type of work on similar construction in the immediate locality.

The scale is large. In the preamble to its 2023 rule, the Department of Labor wrote that the Davis-Bacon Act and more than 70 active Related Acts collectively apply to an estimated $217 billion in federal and federally assisted construction spending per year and provide minimum wage rates for an estimated 1.2 million U.S. construction workers.

Two terms carry most of the weight for a traffic control company: laborer or mechanic, and site of the work.

Are flaggers "laborers or mechanics"?

The regulation at 29 CFR 5.2 defines the term broadly. It includes at least those workers whose duties are manual or physical in nature, as distinguished from mental or managerial. It does not apply to workers whose duties are primarily administrative, executive or clerical.

The Department of Labor has addressed flaggers directly. In the 2023 rule preamble, the Department wrote that it "has previously explained that flaggers are laborers or mechanics within the meaning of the DBA," citing All Agency Memorandum 141 from August 16, 1985 and its Field Operations Handbook.

The Department's rule FAQ makes the same point in plain terms. Asked whether the requirements can apply to flaggers, the Davis-Bacon rule FAQ states: "Yes, it is a longstanding interpretation that the DBRA requirements may apply to 'flaggers.'"

Note the word "may". The Department is describing a category of work that can be covered, not ruling on every worker. Coverage of a specific person still depends on whether the contract is covered and whether the person is working on the site of the work.

The same definition has a provision that matters for crew leads. Forepersons who devote more than 20 percent of their time during a workweek to mechanic or laborer duties, and who do not meet the criteria for the executive, administrative or professional exemptions, are laborers and mechanics for the time so spent. A working crew lead who flags or sets devices for part of the week is a question to raise with your payroll provider or counsel.

The "site of the work" and why it matters for traffic control

Davis-Bacon wage requirements attach to laborers and mechanics working on the site of the work. For most trades the site is obvious. For traffic control it is not, because the job is often done away from the construction.

A flagger controlling one end of a lane closure might stand a few hundred feet from the paving train. An advance warning sign crew might be working half a mile upstream. A detour might be signed across several streets.

The 2023 rule addressed this directly. The definition of site of the work at 29 CFR 5.2 now includes, as a type of adjacent or virtually adjacent dedicated support site, "locations adjacent or virtually adjacent to a primary construction site at which workers perform activities associated with directing vehicular or pedestrian traffic around or away from the primary construction site."

The preamble describes what the Department had in mind. It refers to workers "typically called 'flaggers' or 'traffic directors'" who engage in activities such as setting up barriers and traffic cones, using a flag or stop sign to control and direct traffic, and helping heavy equipment move in and out of construction zones. It notes that some of them work within the primary construction site and others work outside that area and never enter the construction zone.

On distance, the preamble says such workers are working on the site of the work if they work at a location adjacent or virtually adjacent to the primary construction site, "such as a few blocks away or a short distance down a highway."

The Department also explained that it viewed this as a clarification. In its words, it believed these locations were already included in the existing definition, and "given that questions have arisen regarding this coverage issue, the Department proposed to make this principle explicit."

The regulation does not give a distance in feet. "Adjacent or virtually adjacent" is a judgment about the facts. If your crew's work is spread over a long corridor or a detour route, ask the contracting agency how it treats those locations. Do not assume.

What the 2023 rule changed, and its current status

The final rule, titled Updating the Davis-Bacon and Related Acts Regulations, was published in the Federal Register on August 23, 2023 and took effect on October 23, 2023. It was the first comprehensive update of these regulations in roughly four decades.

For traffic control companies, the flagger language in the site of the work definition is the most direct change. The rule also revised recordkeeping requirements, including the contact information contractors keep for each worker.

Parts of the rule have been challenged. The Department's FAQ page notes that on June 24, 2024 a federal district court in Texas issued a preliminary injunction covering three provisions: one about the distinction between material suppliers and subcontractors, one about onsite time for delivery truck drivers, and one that applies the labor standards by operation of law when the clauses were left out of a contract. The page states that "the remainder of the Department's final rule remains in effect."

The flagger clarification is not among the three provisions listed. Litigation moves, so check the Department's rule page for the current status before relying on any single provision.

What the wage determination tells you

When a contract is covered, the wage determination is the document that sets the numbers. It lists classifications of work and, for each, a basic hourly rate and a fringe benefit amount.

Things to look for:

• Is there a flagger classification? Many highway determinations list one, sometimes under laborers and sometimes on its own line. Some do not.
• What happens if there is not? The regulations provide a process, called conformance, for adding a classification that is missing from a determination. It runs through the contracting agency. Raise it with the prime contractor early, before the first payroll.
• Which classification covers device setup? A worker who sets signs, drums and barricades may be classified differently from one who only flags. If a worker does both in a week, the records need to show the hours in each classification. The basic records rule at 29 CFR 5.5 refers to each worker's correct classification or classifications of work actually performed.
• Which determination applies? Determinations are tied to a construction type, a locality and a date. A project can have more than one.

Federal wage determinations are published on SAM.gov. The bid documents should include the applicable one. If they do not, ask for it in writing before you price the work. The Department of Labor's Davis-Bacon and Related Acts page explains the program and links to compliance resources.

The effect on your estimate is direct. The wage in the determination, plus fringe, replaces your normal pay rate for covered hours. Everything that scales with wages moves with it. See flagger labor cost per hour: building a loaded rate for how to assemble the full number.

The records it creates

Coverage is as much a paperwork obligation as a pay obligation. The contract clauses at 29 CFR 5.5 are written into covered contracts and flow down to subcontracts.

Basic records. The clause requires payrolls and basic records to be maintained during the work and preserved for at least 3 years after all the work on the prime contract is completed. The records must contain each worker's name, Social Security number, last known address, telephone number and email address, correct classification of work actually performed, hourly rates of wages paid including fringe contributions, daily and weekly hours actually worked in total and on each covered contract, deductions made, and actual wages paid.

Certified payrolls. The clause requires the contractor or subcontractor to submit certified payrolls weekly, for each week in which any covered work is performed. It also says the prime contractor is responsible for the submission of all certified payrolls by all subcontractors. That is why your prime will chase you for them.

Hours by contract. The phrase "on each covered contract" matters for traffic control. A flagger might work a federal-aid job in the morning and a private utility job in the afternoon. The records have to separate those hours.

That last point is where many small companies struggle. If the timesheet says "8 hours" with no job attached, you cannot build a certified payroll from it. Time has to be captured per job, per day, with the classification of work. A GPS time clock that ties each punch to a job does this as a side effect. We cover the report itself in certified payroll for traffic control contractors.

Overtime is a related but separate subject, with its own federal statutes. See overtime and FLSA basics for traffic control crews.

State prevailing wage laws are a separate layer

Many states have their own prevailing wage laws for state-funded and locally funded public works. They are not Davis-Bacon. They can have different thresholds, different classifications, different rates and different reporting systems.

A single traffic control company can therefore have three kinds of work in one week: private work at its normal pay rates, state prevailing wage work under a state determination, and federally funded work under a federal determination.

We do not summarize state laws here, because they differ too much and change. Ask the awarding agency which law applies, which determination governs, and which reporting system it uses. For how states differ on work zone requirements more broadly, see state DOT work zone requirements: how they vary.

Questions to ask before you bid

Send these to the prime contractor or the agency in writing, and keep the answers with the job.

1. Is this contract subject to Davis-Bacon or a Related Act, a state prevailing wage law, both, or neither?
2. Which wage determination applies? Please send the number and date.
3. Is there a classification for flaggers and for traffic control device setup? If not, has a conformance been requested?
4. How does the agency treat traffic control work performed away from the construction, such as advance warning and detour signing?
5. How are certified payrolls submitted, in what system, and by what day each week?
6. Are fringe benefits to be paid in cash, to a plan, or either?
7. Who is the agency's contact for labor compliance questions?

Then put the assumptions in your proposal. If you priced the work at the rates in a specific determination, name it. If the rates change by modification, say how your price changes. See exclusions and assumptions in traffic control proposals and subcontracting traffic control work: what to nail down.

Common ways traffic control companies get caught out

These are patterns worth guarding against. None of them is a statement about what the rules require of you in particular.

Assuming flagging is outside the rules. The Department's published position is that the requirements may apply to flaggers. Starting from the opposite assumption is risky.

Assuming distance from the paving excludes the crew. The regulation's definition expressly includes adjacent or virtually adjacent traffic-directing locations.

Not asking whether the job is covered. Subcontractors often learn about prevailing wage requirements from the first payroll request. By then the bid is signed. Ask at quote time.

Timesheets without job detail. A weekly total cannot be split across covered and non-covered contracts after the fact with any confidence.

Treating workers as independent contractors. Calling a flagger a 1099 contractor does not by itself take the work outside these rules. Classification has its own tests and its own risks. See flagger employee vs independent contractor classification.

Pricing at the wrong rate. A bid built on normal pay rates for a job that turns out to be covered can lose money on every hour. See job costing for traffic control companies and bid/no-bid decisions.

Where software helps and where it does not

Software does not decide whether a job is covered, which classification applies or what the rate is. Those answers come from the contract, the wage determination and the agency.

What it can do is make the records exist. Traffic OS ties each crew member's time to a job through a GPS time clock, records what was done on GPS-stamped signed daily tickets, and keeps job documents such as the wage determination with the job. That gives whoever prepares your certified payroll hours by worker, by job and by day to build it from. Pricing is flat by tier at $499, $949 or $1,499 per month as of October 2026, with no per-user charge. See pricing, features or book a demo.

Summary

• Davis-Bacon and its Related Acts set minimum wages for laborers and mechanics on covered federal and federally assisted construction.
• The Department of Labor's published position is that the requirements may apply to flaggers, and that flaggers have been treated as laborers or mechanics since 1985.
• Since October 23, 2023, the definition of site of the work expressly includes adjacent or virtually adjacent locations where workers direct traffic around or away from the primary construction site.
• Covered work brings weekly certified payrolls and records of hours by worker, classification and contract, kept for at least 3 years after the prime contract is complete.
• The wage determination in your contract is the only source for the rate.
• Whether your job and your workers are covered is a question for the contracting agency, the Wage and Hour Division or your attorney. Ask before you bid.