Davis-Bacon Prevailing Wage Compliance

Exam blueprint

Sourced from DOL Wage and Hour Division — Davis-Bacon Act compliance materials, 29 CFR Parts 1, 3, 5; FAR Subpart 22.4

• Coverage + Davis-Bacon Related Acts (DBRA) scope10%
• Wage Determination (WD-10) reading + application15%
• Worker classification + apprentice ratios15%
• Certified payroll WH-347 + statement of compliance15%
• Fringe benefits — cash vs. bona fide plan15%
• Site of work + flow-down to subcontractors10%
• DOL audits, back-wages, debarment10%
• Common contractor mistakes + prevention10%

1. 01Coverage + Wage Determinations — when does Davis-Bacon apply?

   ~90min

   Step one is knowing whether the project IS covered. Step two is finding and reading the right Wage Determination. Most compliance failures start with a misread of one of these two basics.

   • Davis-Bacon Act + Davis-Bacon Related Acts (DBRA) — what is covered

     The DAVIS-BACON ACT itself applies to direct federal construction contracts greater than $2,000 — Army Corps, GSA, NAVFAC, federal building construction. Coverage extends much further through the DAVIS-BACON RELATED ACTS (DBRA) — over 60 federal statutes that incorporate Davis-Bacon labor standards into federally-FUNDED projects: highway construction (Federal-Aid Highway Act), public housing (HUD), water + sewer (EPA grants), airports (FAA AIP), broadband (NTIA), and many more. If federal money touches the construction (grant, loan guarantee, federal share), DBRA likely applies. Coverage is determined by the FUNDING SOURCE, not the project's owner. A state or city project funded by a federal grant is DBRA-covered. PROJECT TYPE coverage: 'construction, alteration, or repair' of public buildings + public works. Manufacturing, demolition without rebuilding, and pure maintenance can be edge cases — check 29 CFR 5.2(j).

     Reference: 29 CFR 5.2 (Definitions)

   • Reading a Wage Determination (WD-10) — anatomy + classifications

     Wage Determinations are issued by the DOL Wage and Hour Division and posted on SAM.gov (formerly beta.SAM.gov, formerly WDOL.gov). Every WD has a number like 'WA20240001' (state + year + sequence) and is keyed to: STATE + COUNTY + CONSTRUCTION TYPE (Building / Heavy / Highway / Residential — these are different rate schedules; pick the wrong type and your wages are wrong). Inside the WD: a list of CLASSIFICATIONS (e.g., CARPENTER, ELECTRICIAN, IRONWORKER STRUCTURAL, LABORER GROUP 1, LABORER GROUP 2, etc.) each with a BASE HOURLY RATE and a FRINGE RATE. Total prevailing wage = base + fringe. The contractor must pay AT LEAST this total — base in cash, fringes either in cash OR via a bona fide plan (see fringes module). The WD effective on the SOLICITATION DATE governs the project for its lifetime — except for multi-year contracts where annual updates may be required (FAR 22.404-12).

     Reference: 29 CFR 1.5 (Wage determinations)

   • When the WD does not list your job — conformance requests

     Sometimes the actual work requires a classification not listed on the WD. The contractor cannot just invent a wage. Required process: file a CONFORMANCE REQUEST (form SF-1444) with the contracting agency, who forwards to DOL Wage and Hour Division. The conformance must satisfy three criteria (29 CFR 5.5(a)(1)(ii)(A)): (1) the work is NOT performed by any classification on the existing WD; (2) the proposed classification is utilized in the area by the construction industry; (3) the proposed wage rate bears a REASONABLE RELATIONSHIP to wages on the WD (typically interpreted as similar work classifications). DOL responds within 30 days. While awaiting response the contractor must pay AT LEAST the proposed rate. Common conformance scenarios: emerging trades (solar installer where WD is decades old), specialized rigging, tunnel-boring operators on heavy construction. Failure to conform and just paying a self-set rate is the single fastest path to back-wage liability.

   Practice questions (2)

   1. 1. A state DOT funds a $10M highway repaving project entirely through federal Federal-Aid Highway funds. The state hires a contractor directly. Does Davis-Bacon apply?

      • A.No — Davis-Bacon only applies to direct federal contracts
      • B.Yes — federally-funded highway projects are covered through the Federal-Aid Highway Act, one of the Davis-Bacon Related Acts✓ correct
      • C.Only if the contractor is unionized
      • D.Only if the contract exceeds $50,000

      The Federal-Aid Highway Act incorporates Davis-Bacon labor standards into federally-funded highway construction. Coverage tracks the FEDERAL FUNDING, not the contracting party. (A) limits Davis-Bacon to direct federal contracts only — wrong; the Related Acts triple the scope. (C) the Davis-Bacon Act has no union requirement; it requires payment of locally PREVAILING wages, which may or may not equal union scale. (D) the threshold is $2,000, not $50,000.

   2. 2. A contractor downloads a Building Construction WD for a project that involves tunnel work + bridge piers. Most likely issue?

      • A.The right WD type for tunnel + bridge work is HEAVY construction, not Building✓ correct
      • B.No issue — Building covers all structural work
      • C.The contractor needs to file a Building-to-Heavy conversion request
      • D.The contractor should average Building + Highway WDs

      Davis-Bacon WDs are issued by CONSTRUCTION TYPE: Building, Heavy, Highway, Residential. Heavy includes tunneling, dredging, dam construction, deep foundation work, bridge piers — anything that's not building / highway / housing. Using Building rates for Heavy work systematically underpays workers and is a common audit finding. (B) wrongly assumes Building = everything structural. (C) there is no 'conversion' process — the contractor uses the correct-type WD from the start, or files a conformance for missing classifications. (D) averaging WDs is not permitted.

2. 02Worker classification + apprentice ratios

   ~75min

   Misclassification is the #1 source of back-wage liability. Knowing how to slot a worker into the WD's classifications — and the rules around apprentices and helpers — is the hardest single competency.

   • Classification follows ACTUAL WORK PERFORMED, not job title

     DOL's bedrock rule: a worker is classified by the WORK THEY ACTUALLY PERFORM, not by their job title or what their employer's payroll system calls them. If your 'general laborer' spends 40% of their week setting and stripping concrete forms, those 40% must be paid at the CARPENTER rate (form work is carpenter work in most jurisdictions). This is called the SPLIT-CLASSIFICATION rule: a worker may have multiple classifications in a single workweek, and the certified payroll must show hours under each classification with the corresponding wage. Failure to split is a classic audit finding. The contractor must keep TIME RECORDS detailed enough to support the split — this is why DOL audits often start by interviewing workers about what they actually did, then comparing to certified payroll.

     Reference: 29 CFR 5.5(a)(1)(i)

   • Apprentices + the ratio-to-journeyman rule

     An apprentice can be paid at the apprentice rate (a percentage of journeyman scale, scaling up as the apprentice progresses) ONLY IF the apprentice is registered in a DOL-approved apprenticeship program (federal Office of Apprenticeship or a state apprenticeship agency recognized by DOL). The apprentice's percentage rate AND the apprentice-to-journeyman RATIO must come from that program — typically 1:1 (one apprentice per journeyman) or sometimes 1:2 in newer programs. If the contractor exceeds the ratio (e.g., 3 apprentices working with 1 journeyman in a craft where the ratio is 1:1), the EXCESS APPRENTICES must be paid at full JOURNEYMAN rate for those hours — back wages owed. Common audit finding: a contractor with 4 carpenter apprentices and 1 journeyman carpenter on site, paying all 4 at apprentice rates. Three of those apprentices are exposed for back wages.

     Reference: 29 CFR 5.5(a)(4)

   • Helpers — restricted classification

     HELPER is a heavily-restricted classification under Davis-Bacon. A 'helper' is a semi-skilled worker who works UNDER THE DIRECTION of a journeyman and performs duties distinct from the journeyman's craft. The HELPER classification can ONLY be paid at the helper rate if all three conditions are met: (1) the WD itself lists 'helper' as a separate classification AND specifies helper duties; (2) the helper duties are clearly distinguishable from journeyman duties; (3) helpers are commonly used in the area for that craft. If any condition fails, the worker must be paid at the FULL JOURNEYMAN RATE for the craft. DOL deliberately makes the helper classification narrow because contractors historically misused it to cut costs. On most modern WDs there is NO helper classification — meaning if you employ someone you'd traditionally call a 'helper', they are paid at journeyman rate.

   Practice questions (2)

   1. 1. On a Davis-Bacon project, an employee classified by their employer as a 'general laborer' spends Monday-Tuesday digging a footing trench (laborer work) and Wednesday-Friday setting concrete forms (carpenter work). How must the certified payroll record their hours?

      • A.All 40 hours at laborer rate
      • B.All 40 hours at the higher of laborer or carpenter rate
      • C.16 hours at laborer rate + 24 hours at carpenter rate (split classification)✓ correct
      • D.Whatever the employer chooses to pay

      Classification follows ACTUAL WORK PERFORMED, not job title. The employee performed two classifications during the week and must be paid each rate for the hours actually spent on each work — split classification with time records to support the split. (A) underpays the carpenter work and is a classic audit finding. (B) overpays — Davis-Bacon does not require paying the higher rate uniformly; it requires paying the actual rate for the actual work. (D) ignores the entire compliance regime.

   2. 2. A contractor has 1 journeyman ironworker and 4 ironworker apprentices on site (all 4 registered in a DOL-approved program). The program specifies a 1:1 apprentice-to-journeyman ratio. Compliance impact?

      • A.All 4 apprentices may be paid at apprentice rates
      • B.Only 1 apprentice (matching the 1 journeyman) may be paid at apprentice rate; the other 3 must be paid at full journeyman rate for those hours✓ correct
      • C.The contractor must hire 3 more journeymen immediately
      • D.The 4 apprentices' hours are not Davis-Bacon-compliant at all

      The 1:1 ratio caps how many apprentices can be paid at apprentice rate per journeyman. With 1 journeyman and 4 apprentices, ONE apprentice can be paid at apprentice rate; the other THREE are paid at full journeyman rate for that workweek (back wages if not — the audit finding writes itself). (A) ignores the ratio rule. (C) is a future hiring suggestion, not a current compliance fix. (D) is incorrect — the apprentices CAN work, they just can't all be paid apprentice scale.

3. 03Certified payroll WH-347 + fringe benefits

   ~90min

   The certified payroll is the contractor's weekly sworn statement that everyone was paid prevailing wages for the work performed. Fringe benefit handling is where most contractors trip — calculating cash-equivalent for non-cash fringes is non-trivial.

   • WH-347 — anatomy of certified payroll

     Form WH-347 (or an equivalent format that captures all WH-347 fields) is the federal certified payroll form. Required weekly for every covered project. It captures, per worker per week: (1) name + last 4 of SSN; (2) classification used (must match WD); (3) hours worked each day + total; (4) hourly rate (base) + fringe rate; (5) gross weekly earnings; (6) deductions (federal/state tax, FICA, voluntary); (7) net wages. The accompanying STATEMENT OF COMPLIANCE (page 2 of WH-347, or form WH-348) is signed by an officer or authorized representative of the contractor swearing UNDER PENALTY OF PERJURY that the information is correct, the wages were paid, and no rebates or kickbacks were taken. Fraudulent statements expose the signer to federal criminal liability under 18 USC § 1001. Submit WEEKLY — typically by Tuesday for the prior week — to the contracting agency, where it is reviewed and (on most projects) the prime contractor must maintain copies of all subcontractor certified payrolls as well.

     Reference: 29 CFR 5.5(a)(3)(ii)

   • Fringe benefits — cash vs. bona fide plan

     The TOTAL prevailing wage = base rate + fringe rate. Example: WD shows Carpenter base $35.00 + fringe $18.00 = total $53.00. The contractor must deliver $53.00 of value per hour. Two paths: (1) PAY ALL CASH — pay $53.00/hour as wages; the worker pays their own benefits. Compliant but expensive (the full $53 is subject to payroll taxes). (2) BONA FIDE PLAN — pay $35.00 as cash wages and contribute $18.00/hour to a bona fide benefit plan (health insurance premium, pension, 401(k) employer match, training fund, vacation/holiday). The plan must be COMMUNICATED in writing to workers, IRREVOCABLE (no contractor recovery), and benefits to a third-party trustee or insurance company (not contractor's general fund). Tax savings to the contractor on the fringe portion can be substantial. Hybrids are allowed — e.g., $10/hr cash + $8/hr to plan, summing to the required $18/hr fringe.

     Reference: 29 CFR 5.31 (Fringe benefits)

   • Fringe miscalculation — the most common compliance failure

     Common fringe accounting errors: (1) The contractor pays for health insurance MONTHLY but Davis-Bacon credit accrues only for HOURS WORKED. If the worker only worked 80 Davis-Bacon-covered hours that month and the health insurance premium was $400, the credit is $400/80 = $5.00/hour for those 80 hours — but the WD requires $18.00 fringe. The contractor must MAKE UP THE DIFFERENCE in cash or another credited benefit. (2) Vacation accrual is creditable PROSPECTIVELY only when actually paid out — annual accrual rates must be calculated and may not match the hourly fringe requirement. (3) Discretionary bonuses are NOT bona fide fringes (must be predetermined). (4) Mixing union health-and-welfare contributions on covered + non-covered hours without proper allocation. (5) Paying fringes on overtime — the WD fringe rate applies to ALL hours including overtime, but the OVERTIME PREMIUM (the half of time-and-a-half) is calculated on base only, not on fringe. Audit findings on fringe miscalculation are second only to misclassification.

   Practice questions (2)

   1. 1. A contractor signs the Statement of Compliance on form WH-347 for a week in which they actually paid two workers at less than the WD rate. Most serious legal exposure?

      • A.Civil penalty only
      • B.False statement under 18 USC § 1001 — federal criminal exposure for the signer personally✓ correct
      • C.Loss of good-customer status with DOL
      • D.Mandatory training requirement

      Signing the Statement of Compliance under penalty of perjury when the underlying payroll is false exposes the signer to federal criminal liability under 18 USC § 1001 (false statements to a federal agency). This is the heaviest hammer in Davis-Bacon enforcement and is reserved for clear cases, but it is real. (A) understates the exposure. (C) is not a defined consequence. (D) trivializes the violation. The lesson: DO NOT sign a Statement of Compliance that you have not personally verified.

   2. 2. A WD requires Carpenter base $35.00 + fringe $18.00 = $53.00 total. The contractor pays cash wages of $40.00/hour and contributes $10.00/hour to a bona fide health plan. Compliance status?

      • A.Compliant — total compensation is $50.00, close to $53.00
      • B.Non-compliant — total compensation is $50.00; short $3.00/hour. The contractor must increase cash or plan contribution to reach $53.00✓ correct
      • C.Compliant — paying cash above base is always sufficient
      • D.Non-compliant only if a worker complains

      The TOTAL must reach $53.00 — base + fringe. $40 cash + $10 plan = $50 total, which is $3.00/hour short of the prevailing wage. The contractor owes $3.00/hour back wages (or equivalent fringe credit). The fact that cash was paid above base doesn't help — the rule is on the TOTAL. (A) 'close' is not a Davis-Bacon defense. (C) wrongly treats cash as a substitute for the fringe-quantum requirement. (D) inverts the compliance regime — DOL audits do not require a worker complaint to find violations.

4. 04Flow-down to subcontractors + DOL audits

   ~60min

   The prime contractor is responsible for ensuring all subcontractors comply with Davis-Bacon — flow-down clauses are mandatory. DOL audits can reach back 3+ years and trigger debarment.

   • Flow-down clauses + prime contractor responsibility

     FAR 22.4 and 29 CFR 5.5 require the contracting agency to insert Davis-Bacon CLAUSES into the prime contract, and require the prime contractor to FLOW THOSE CLAUSES DOWN to every subcontractor — at every tier. The prime is contractually + legally on the hook for: (1) ensuring subs are paying prevailing wages and submitting accurate certified payrolls; (2) maintaining a complete file of all subs' weekly certified payrolls; (3) responding to DOL audits including subs' records; (4) BACK-WAGE LIABILITY if a sub fails — DOL can pursue the prime for unpaid wages owed by a sub, and the prime then chases the sub through indemnity. Practical implication: the prime's payroll review staff must spot-check sub certified payrolls weekly. The 'I hired a sub who said they were compliant' defense does not work in Davis-Bacon.

     Reference: FAR 22.4 (Construction Wage Rate Requirements)

   • Site of work — geographic boundary of Davis-Bacon coverage

     Davis-Bacon applies to work performed at the SITE OF THE WORK — defined at 29 CFR 5.2(l) as: (1) the physical place where the building or work is being constructed; (2) ADJACENT areas used for the construction work (laydown yards, batch plants set up specifically for the project); (3) other ADJACENT or VIRTUALLY ADJACENT sites controlled by the contractor where they are doing work for the contract. Off-site fabrication shops (a permanent shop that serves multiple projects) are GENERALLY NOT site of work — those workers are not Davis-Bacon-covered for that fabrication time. Truck drivers' time on the public highway is GENERALLY NOT site of work — but their time loading/unloading at the site IS covered. Many compliance disputes turn on the site-of-work boundary; document the geography of every laydown yard and adjacent operation.

     Reference: 29 CFR 5.2(l)

   • DOL audits, back-wages, debarment

     DOL Wage and Hour Division audits can be triggered by: worker complaint, agency referral, periodic random selection, or a tip-off. The audit reviews payroll records (3+ years back — DOL's typical look-back), interviews workers about actual work performed and pay received, compares to WD rates and certified payrolls. Findings ladder: (1) BACK WAGES — full retroactive payment to affected workers, plus interest. (2) WAGE WITHHOLDING — DOL can direct the contracting agency to WITHHOLD CONTRACT PAYMENTS (up to the amount of back wages estimated) until the violation is cured. (3) CIVIL PENALTIES under FLSA / Contract Work Hours Safety Standards Act. (4) DEBARMENT — a contractor or sub found in willful violation can be DEBARRED from federal contracts for THREE YEARS, listed on SAM.gov's debarred-contractors list. Debarment is the existential threat — many contractors have gone out of business as a result. (5) CRIMINAL referral for falsified records (18 USC § 1001).

   Practice questions (3)

   1. 1. A prime contractor on a federal project hires a small subcontractor who fails to pay prevailing wages to their 3 workers. The DOL audit finds the violation 18 months later. Who is liable for the back wages?

      • A.The subcontractor only
      • B.The prime contractor only
      • C.Both the prime and the subcontractor — DOL can pursue the prime for back wages owed by the sub, and the prime can then pursue the sub via indemnity✓ correct
      • D.Neither — DOL only pursues willful violators

      Davis-Bacon flow-down makes the PRIME jointly liable for sub violations. DOL typically pursues the prime first because the prime is the contracting party with payment from the federal agency — wage withholding is fastest there. The prime then chases the sub via indemnity in the subcontract (which should always include Davis-Bacon back-wage indemnity). (A) ignores prime joint liability. (B) ignores the actual violator. (D) confuses willfulness with liability — back wages owe regardless of willfulness; debarment requires willfulness.

   2. 2. A DOL audit finds a contractor willfully misclassified workers and owes $250K in back wages. The most severe additional sanction available is:

      • A.A written warning
      • B.Mandatory training course
      • C.Three-year debarment from federal contracts (named on SAM.gov debarred list)✓ correct
      • D.A 10% discount on future federal contracts

      Debarment for three years is the maximum administrative sanction under the Davis-Bacon Act for willful violations. Listed on SAM.gov, the contractor (and named principals) cannot bid on, hold, or be a subcontractor on federal contracts for three years. This is often a business-ending event for federally-focused contractors. (A) and (B) are too lenient for a willful $250K violation. (D) is fictional.

   3. 3. Which of these is a COMMON Davis-Bacon contractor mistake that frequently triggers back-wage liability?

      • A.Submitting certified payroll early
      • B.Misclassifying workers based on job title rather than actual work performed✓ correct
      • C.Using DOL form WH-347
      • D.Maintaining 5 years of payroll records when only 3 are required

      Misclassification by job title (instead of actual work performed) is the single most common audit finding — workers performing carpenter work paid at laborer rate, framers paid as helpers, etc. (A) submitting early is fine — the rule is weekly, not 'no earlier than'. (C) WH-347 is the correct form. (D) over-retaining records is conservative and never penalized; the 3-year rule is a minimum.

External resources

• Official
  DOL Wage and Hour Division — Davis-Bacon Act compliance portal ↗

  Official compliance hub. Includes WH-347 form, fact sheets on classification + apprentices + fringes, and links to the conformance request process. Read the 'Construction Contracts' fact sheet series before sitting any compliance role.

• Official
  SAM.gov Wage Determinations ↗

  Single source for all current Davis-Bacon Wage Determinations — searchable by state, county, construction type. Bookmark and re-check on every project; the WD effective at solicitation governs the contract for its life.

• Third-party
  29 CFR Part 5 — Labor Standards Provisions Applicable to Contracts Covering Federally Financed and Assisted Construction ↗

  The full text of 29 CFR Part 5 — definitions, classifications, fringe benefits, certified payroll requirements, debarment procedures. Section 5.5 (the contract clauses) is the most-cited provision in audit findings.