How Does a Prevailing Wage Job Work? (w/Examples) + FAQs

A prevailing wage job pays every laborer and mechanic a government-set hourly rate for their trade, locked in before work starts. Federal jobs under the Davis-Bacon and Related Acts trigger this duty over $2,000, and most states run a similar rule. Skip a report, and the contractor pays for it later.

This article reflects federal Davis-Bacon rules updated by the Department of Labor in May 2024, plus California's current public-works rules, as of 2026. Rules shift and vary by state, so check current figures before you rely on them. Treat this as background, not a stand-in for a payroll expert or an employment lawyer who reviews your actual contract.

What Makes a Job "Prevailing Wage"

A prevailing wage job is any construction contract where public money is involved. A government wage determination sets the floor pay for every trade on site. The rate is not something a contractor negotiates. It is published ahead of time, tied to a specific place and craft, and written into the contract before bidding closes.

Two separate legal tracks create this duty, and mixing them up is where confusion usually starts. The federal track runs through the Davis-Bacon and Related Acts. It covers federal construction contracts over $2,000.

A sibling law, the Service Contract Act, sets a like wage floor for federal service contracts instead of construction. That is why a school's cafeteria-staffing deal and its roof-repair deal can both carry "prevailing wage" language, drawn from two different laws. A contractor bidding both kinds of work has to check which statute applies before pricing either one.

States add their own layer on top of the federal rules. California's system is one of the most detailed: under the Department of Industrial Relations' FAQ, the state requires prevailing wages on any public works project over $1,000. An awarding body with a labor compliance program can skip that rule only on small jobs: construction work at $25,000 or less, or alteration, demolition, repair, or maintenance work at $15,000 or less. The federal and state thresholds do not match, so a project can be covered under one system and exempt under the other.

One mix-up deserves a direct callout. The Department of Labor also uses the phrase "prevailing wage" for a separate program covering foreign-worker visas like H-1B and PERM, run through the National Prevailing Wage Center. If a search turns up immigration paperwork instead of a jobsite wage rate, that is why. This article sticks to the construction and government-contracting kind only.

Two related topics deserve their own space rather than a shallow pass here. A full walkthrough on finding your rate covers pulling the actual number off SAM.gov or a state portal. Whether that money lands as cash or a benefit credit is its own question, covered in how fringe benefits factor in in full.

Confusing the two systems costs real money on a first public job. A bidder who prices a school job on a guessed private-market wage, instead of the real rate, can underbid by tens of thousands of dollars. They find the gap only after signing a contract that requires the higher rate by law. The rate is fixed once the contract is signed, so the loss comes straight out of the contractor's profit.

How a Wage Determination Gets Locked to the Job

Once a project counts as federal, federally funded, or a qualifying state public-works job, a wage rate sheet attaches to the contract. It usually stays attached for the whole project. In California, general rate sheets come out twice a year, on February 22 and August 22, county by county. A special one can be asked for when a craft is not on the general list, at least 45 days before bids are due.

The rate sheet's expiration date matters more than most contractors expect. A single asterisk means the rate holds for the whole job once it is set at bid time. A double asterisk means a future raise is already set, and the new rate applies once the job runs past that date. Whichever rate sheet was set on the bid date usually controls, future raises included, even after the crew is on site.

This creates real financial risk around timing. A general contractor who locks in a bid right as a determination flips from single- to double-asterisk status can end up bound to a higher wage rate mid-project. There is often no clause letting them pass that cost back to the project owner. Checking the expiration markers before signing, not after the crew mobilizes, is the fix.

The class structure, and the fringe-versus-cash math inside a rate sheet, are big topics on their own. This piece treats the rate as a locked input instead. It focuses on what happens next: how workers get classed against it, how contractors prove they paid it, and what an audit checks.

One common edge case is worth planning for: a project that starts before a refresh and finishes after the next one. Say a bid goes out in January under the rate sheet in effect then, and the job runs past the following August 22 refresh. The January rate sheet, asterisks and all, is still the one that usually governs the whole job.

It does not matter what the state publishes that August. A contractor who assumes each new refresh applies mid-project can misprice change orders, or miss a scheduled increase that was baked in from day one. Building a calendar reminder around each refresh date is a cheap habit that avoids the whole problem.

Craft Classification: The Decision That Sets Everyone's Paycheck

Every worker on a prevailing wage job gets classified into a specific craft before their first paycheck. That single decision fixes the wage floor, the fringe rate, and the overtime rules that apply to them for the rest of the project. Classification is not self-reported; it has to match the actual work performed, hour by hour, not a job title on a business card.

An electrician wiring a panel earns the electrician rate for that hour. That is true even if the pay stub says "general laborer." On a typical determination, the gap between a laborer rate and an electrician rate, fringe included, can easily run into double-digit dollars per hour depending on the county and craft. That gap is exactly what makes a wrong classification tempting for a contractor trying to shave cost off a tight bid.

The consequence lands on the contractor, not only the worker. Once an auditor spots a pattern of underpaid class during a site interview, the finding applies back across every week the worker did that higher-skill work. A common myth is that classification is a good-faith guess a contractor can defend later.

In practice, the actual work controls. "We thought it counted as labor" is not a defense once records show wiring or panel work billed at a laborer's rate. The classification a contractor meant to use never matters once the actual task performed is on record.

Sometimes a craft simply does not fit any listed class on the rate sheet. An agency can then issue a "conformance": it slots the work into the closest class, or makes a new one, before the crew starts that task. Skipping that step, and simply picking whichever class pays less, is the shortcut that turns into a six-figure back-wage bill on a large job.

A worker who splits one day between two trades needs each block of hours paid at its own rate. A blended average for the whole shift is not allowed. A laborer who cleans up a site all morning, then runs conduit all afternoon, earns the laborer rate for the morning and the electrician rate for the afternoon. Tracking that split depends on the same daily site log a contractor already keeps for certified payroll, so the two habits reinforce each other.

Certified Payroll: The Paperwork That Proves the Rate Was Paid

Certified payroll turns "we paid the prevailing wage" from a claim into proof an agency can check. Under the Davis-Bacon and Related Acts, every contractor on a covered job must pay workers weekly. Each week, they must also file a certified payroll with the agency. Each report shows a worker's name, an ID number, their class, hourly wage and fringe paid, hours worked, and any deductions.

The standard federal vehicle is Form WH-347. Its page 2 "Statement of Compliance" has to be signed, typically by the contractor or a supervising officer, within seven days of the regular payment date. A contractor does not have to use WH-347 specifically; any form with identical wording satisfies the rule. The signature has to be an original handwritten one or a legally valid electronic one.

Faking a certified payroll is more than a contract dispute. So is quietly taking back part of a worker's pay after paying the right rate on paper. Either move can expose a contractor to civil or criminal charges under the law. The Copeland Anti-Kickback Act separately bans any deal that pressures a worker to give back earned pay, and it requires that same weekly wage statement.

A common myth is that certified payroll is a formality nobody reads closely. Agencies and the Wage and Hour Division cross-check it against worker interviews. A paper mismatch is often the quickest route to catching a pay error. Underneath the weekly report sits a wider duty: contractors must keep detailed records, including fringe and apprentice paperwork, for three years after the main contract ends.

Certified payroll also feeds a separate process most contractors never touch. When the Wage and Hour Division runs a new wage survey for an area, a contractor can report its own project wage data on Form WD-10. That data helps set the next round of rate sheets for that market. Sending it in is optional, but a contractor who never reports data has no voice in whether future rates track real local pay.

Apprenticeship Ratios: The One Legal Path to Pay Below Scale

Registered apprentices are the only group the law lets a contractor pay below the full journeyman rate. That exception only holds if the apprentice is signed up in a program approved by the Department of Labor or a state agency. The program sets a ratio, a fixed number of apprentices per journeyman on a crew. It also sets a step schedule that raises the apprentice's pay share as they move up.

Running more apprentices than the ratio allows kills the exception for the extra workers. So does paying apprentice rates to someone who was never formally signed up. This trips people up because a worker still learning the trade can look, to a foreman, exactly like a real apprentice hire, paperwork or not.

The risk here is severe because the shortcut is invisible on the jobsite. An unregistered "apprentice" paid a fraction of scale is, in the law's eyes, simply an underpaid journeyman. The back-wage bill builds the same manner as a straight classification error. A contractor who lets a trade student, or a relative's teenager, work informally at "apprentice pay" without registration is building that debt without knowing it.

The fix is simple and cheap next to the risk. Confirm registration with the Department of Labor's Office of Apprenticeship, or the state agency, before the person's first paycheck. Keep that proof with the project's certified payroll records, not buried in a personnel file nobody checks during an audit.

The step schedule is worth knowing, since it is not one flat discount off the journeyman rate. A first-year apprentice might earn 50 percent of scale. A fourth-year apprentice near the end of the program might earn 80 percent or more. The registered program sets those steps, not the contractor.

A contractor who pays every apprentice the same low rate, no matter their year, is misusing the exception, even with every apprentice properly signed up. And if no local program covers a needed craft at all, the exception simply does not exist for that job. Every worker doing that trade then earns the full journeyman rate.

Contractor and Subcontractor Obligations Down the Chain

A general contractor is not shielded by a sub's own mistakes. Davis-Bacon labor rules have to sit inside every covered subcontract. The prime answers for every tier of sub paying and reporting right, even for workers it never directly runs. On a job with a dozen subs across electrical, mechanical, and site work, that load grows with every payroll filed each week.

The common failure mode is a GC that treats "flowing down" the wage clauses as paperwork, not an ongoing watch duty. A sub with thin office staff, often the smallest trade on a job, is the most likely to file late or wrong payrolls. An agency's audit does not care whether the error was the prime's or the sub's when it decides whether to withhold payment.

On a union prevailing wage job, the local often sets the base pay scale itself. Health, pension, and annuity money comes out before the check is even cut. That setup is one reason union subs tend to have fewer pay disputes than an open-shop crew built fresh for one project. A well-run GC builds a standing checklist into every subcontract: proof the sub pulled the right rate before pricing its bid, a payroll deadline ahead of the federal seven-day rule, and a clear escalation step after two missed weeks.

Withholding part of a contract payment is one tool a contracting agency can use against a prime whose subs are not compliant. That gives the GC a direct financial reason to police the chain, rather than assume subs are handling it correctly on their own. A GC that skips this step only discovers the gap once an audit is already underway, when the fix costs far more than a weekly review would have. Some GCs solve this by holding back a small share of each sub's pay until that sub's certified payroll for the same period clears review, which turns compliance into a shared incentive instead of a one-sided burden.

Which Situation Applies to You?

The compliance load on a prevailing wage job looks different depending on where a reader sits in the contract chain. The table below points each role toward what matters most for them first, before they read the rest of this guide in detail. Skipping straight to the wrong row risks missing the one rule that decides whether a reader stays compliant.

A worker who suspects a wrong classification has the shortest path to a fix. Raise it with a union rep, or file a complaint with the Wage and Hour Division or a state labor agency. Retaliation for that complaint is its own violation, so the worker has real legal cover.

A sub bidding a first public job should research the wage rate before pricing anything else. A bid built on a guess cannot be renegotiated once it is signed. A GC juggling several crafts across several subs needs the heaviest system of all, since that GC answers for the whole chain no matter which sub erred.

Agency staff carry a different burden entirely. They have to put every conformance and coverage call in writing, since that paper trail is what an appeal or a later audit leans on. An agency that makes a verbal classification call, with nothing written down, leaves both the contractor and its own office exposed if a dispute grows.

A Day on a Prevailing Wage Job: What Changes for the Worker

For the worker pulling wire or swinging a hammer, the biggest daily difference from a private job is how little of the pay rate is open to discussion. The classification a foreman assigns at the start of a task sets the hourly floor for that task. The fringe portion is calculated against a published rate, not whatever an employer feels like offering that year. Overtime generally kicks in after eight hours a day or 40 hours a week, off the government rate rather than a private handshake deal, though the exact trigger can shift with the specific determination.

One electrician worked for a contractor who ran both prevailing wage and private jobs. He described the fringe money on his prevailing wage work covering 100 percent of his health premium. On that same contractor's private jobs, though, that same cost came straight out of his hourly rate instead. The contrast is real: on a prevailing wage job, benefit dollars are tied to the contract and figured the same for everyone in that craft.

On a private job, an employer keeps far more discretion over how that same cost gets structured, and it can quietly shift onto the paycheck instead. The fringe-versus-cash mechanics behind that split are worth a deeper look elsewhere. The short version on site is that prevailing wage work leaves an employer much less room to move cost around.

When pay on a job does not match the posted rate, workers describe a practical move: raise it with a union rep first, or book a free consult with a labor attorney. That beats a solo fight with a contractor on a job the worker still has to show up to tomorrow. Retaliation for raising a wage concern, or for helping a Wage and Hour Division probe, is banned outright. A worker who keeps a private note of hours, tasks, and pay, apart from the employer's payroll system, holds the clearest record if a dispute ever grows.

Enforcement and Audits: What Happens When Something Goes Wrong

A prevailing wage violation usually surfaces one of three ways. A routine compliance review is one. A worker complaint to the Wage and Hour Division or a state agency is another.

A rival contractor's protest during bidding can also trigger one. Auditors typically check certified payroll against worker interviews on site, so a paper record that does not match real tasks gets caught fast. That is why the site log matters as much as the report itself.

Once a violation is confirmed, back wages get figured for every affected week. The agency can withhold contract payments in an amount that covers the gap, plus any extra damages tied to overtime violations. Penalties scale sharply with how bad and how willful the error was, which is worth taking seriously even for an honest mistake.

A contractor found to have ignored its wage duties can be debarred from federal contracts for three years. For a small firm that depends on public work, that alone can end the company. Falsifying payroll records, or arranging a wage kickback, can lead to civil or criminal charges, with fines or jail time on the table.

That goes well past a simple repayment order. A contractor can challenge a finding before an administrative law judge, then appeal to the Department's Review Board, and finally to federal court. That path is slow and costly next to keeping clean records from the start.

State enforcement runs on its own track, and it is equally serious. California's Labor Commissioner's Office looks into public-works wage complaints. It can also pursue a judgment against a contractor found to owe back wages.

The same coverage process that settles whether a project counts as "public works" can also settle whether a craft was classified right. Contractors new to public work often assume a state audit runs softer than a federal one. In practice, state labor commissioners often move faster on small local jobs, since the dollar amounts are easier to check quickly.

Where the Rubber Meets the Road: Three Ways This Plays Out

The rules above turn into very different outcomes, depending on who holds the risk when something goes wrong. Each case below teaches a different lesson about where a prevailing wage job can go right or wrong, from the paperwork side to the enforcement side. The names are made up, but each pattern shows up often in real audits.

The General Contractor Juggling Four Crafts and Four Subs

Renata runs project administration for a general contractor rebuilding a federally funded airport terminal. She coordinates electrical, mechanical, drywall, and site-work subs on one schedule. Her biggest headache is not any single wage rate. It is that four subs submit four separate payrolls every week, each with its own quirks.

Her firm answers to the contracting agency for all four subs if any one of them slips. She built a shared tracker that flags any sub whose submitted classifications do not match the crew list from the daily site log. That system caught two labeling mismatches before they became real underpayments.

Her lesson is about scale, not any single rule. A GC's risk on a multi-craft job is fundamentally a project-management problem dressed up as a payroll problem. The fix is a system that checks paperwork against the real crew, not a bigger stack of forms. That system costs her firm a few hours a week, far less than one bad finding would cost in back wages and delay.

The Subcontractor Who Shortcut a Classification to Win a Bid

Priya owns a small electrical subcontracting firm. She underbid a rival on a school renovation by calling two of her crew general laborers. In fact, they ran conduit and pulled wire, work that belongs at the electrician rate. She made the call under bid pressure, thinking she could fix the paperwork later if anyone asked.

A rival who lost the bid filed a complaint over the price gap. Wage and Hour Division site interviews found the two workers had done electrician-level tasks the whole project, not the odd labor task her payroll claimed. The finding covered every week those two workers had been on the job, not only the weeks after the complaint arrived.

Priya's records had the right names and the right hours. Only the class column was wrong, and that one column was enough to trigger the full back-wage math below. Nothing else about her paperwork raised a flag, which is exactly why the mistake sat unnoticed for months.

The Worked Example: What Priya's Shortcut Cost

The math behind a misclassification finding is straightforward once an investigator confirms the correct classification. Say the determination set the electrician rate at $46 an hour in wages plus $14 an hour in fringe, a $60 total package. The laborer rate Priya paid instead was $30 an hour in wages plus $8 an hour in fringe, a $38 package. (These figures are illustrative, not a live rate for any real county.)

Two workers misclassified for 400 hours each add up to an 800-hour shortfall at $22 an hour, or roughly $17,600 in back wages. That total lands before any liquidated damages tied to associated overtime violations get added on top. The bill came due on a bid Priya had already spent to complete, turning a job she thought was profitable into a net loss.

Her lesson is about incentive, not paperwork. Shaving a class to win a bid does not save money; it only defers the cost. The gap gets paid regardless, whether it shows up on this week's invoice or next year's fine. A bid priced on the right class would likely have lost her the job, but losing a bid costs far less than winning one and paying the gap anyway.

The Worker Whose Back Wages Surfaced Through a Routine Audit

Dwayne worked as a laborer on a Department of Veterans Affairs hospital renovation for three months. A routine Wage and Hour Division review, not tied to any complaint he had filed, checked the certified payrolls against worker interviews on site. The auditor found he had, in fact, run heavy equipment at an operating-engineer skill level for about a third of his hours.

That work carried a materially higher classification than what his paychecks reflected. The contractor was ordered to pay the wage difference for every affected week. Dwayne received a lump-sum back-wage payment months after the fact, without ever having raised the issue himself.

His lesson differs from the other two. Enforcement does not need a worker to file a complaint, or even suspect anything is wrong. Routine audits exist because pay errors are common, and often honest mistakes on the contractor's side, so the government checks on its own. Given that, a worker's best move is keeping a personal record of tasks and hours worked.

Mistakes to Avoid

• Classifying by job title instead of task. Paying the laborer rate for electrician-grade wiring work creates back-wage exposure retroactive to every hour, not only the hours discovered during an audit.
• Treating certified payroll as a rubber-stamp formality. A weekly WH-347 that doesn't match the actual site log is the quickest route to an investigator spotting a violation during an interview.
• Running apprentices without confirmed registration. An informally "apprentice-rate" worker who was never registered with a recognized program is legally a full-rate journeyman being underpaid.
• Ignoring the wage determination's expiration markers. A double-asterisk determination scheduled to increase mid-project can leave a contractor bound to a higher rate with no clause to recover the cost.
• Assuming subcontractor errors aren't the GC's problem. A contracting agency can withhold payment from the prime contract for a sub's violation, regardless of which party made the mistake.
• Skipping the conformance process for an unlisted craft. Guessing a classification instead of requesting a conformance determination invites a dispute that gets resolved retroactively, at the contractor's expense.
• Underpricing a bid on a guessed wage rate. A bid built without pulling the actual determination cannot be renegotiated once the contract is signed, so the shortfall comes straight out of margin.
• Letting apprenticeship ratios drift above the program limit. Exceeding the allowed apprentice-to-journeyman ratio strips the pay exception for every apprentice over the line, not only the excess ones.
• Missing the seven-day certified payroll deadline repeatedly. A pattern of late submissions signals weak recordkeeping and tends to draw closer compliance scrutiny than a single late week.

Do's and Don'ts for Working a Prevailing Wage Contract

Do

• Pull the actual wage determination before pricing a bid. Guessing a rate risks a contract you can't afford once the real number applies.
• Map every distinct task to its correct classification before mobilization. Fixing a classification after the crew starts working means back-paying every hour already worked.
• Confirm apprentice registration in writing before the first paycheck. An unregistered apprentice-rate worker is a misclassification the moment they clock in.
• Keep certified payroll current with the actual site log every week. A payroll that doesn't match daily task assignments is the pattern investigators look for first.
• Escalate a suspected pay discrepancy through a union rep or the Wage and Hour Division. Retaliation for raising the issue is itself a separate violation, which protects the worker who speaks up.
• Track subcontractor payroll status on a shared GC-level system. A sub's missed submission becomes the general contractor's exposure during an audit regardless.

Don't

• Don't classify by job title instead of the work performed. The classification that controls is whatever task the worker did that hour, regardless of what the pay stub says.
• Don't treat the determination's expiration date as a formality. A predetermined increase already scheduled into a double-asterisk determination still applies once the project crosses that date.
• Don't assume a "good faith" classification guess protects a contractor later. Once an audit confirms the actual work performed, intent doesn't reduce the back-wage calculation.
• Don't let a subcontractor's certified payroll go unreviewed by the general contractor. A GC answers to the contracting agency for every tier of the job, not only its own direct payroll.
• Don't run more apprentices than the program's ratio allows. Every apprentice over the ratio limit loses the below-scale pay exception entirely.
• Don't wait for a complaint before checking your own records. Routine compliance reviews happen without any worker filing anything first.

Pros and Cons of Prevailing Wage Work

Pros

• Pay floors are transparent and published. A worker or bidding contractor can look up the exact rate for a craft and county rather than negotiating blind.
• Fringe benefits are tied to the job, not employer discretion. The benefit dollars follow a published formula for everyone in that craft on that contract.
• Retaliation protection covers wage complaints. A worker who raises a concern about pay, or cooperates with an investigation, has a specific legal shield against reprisal.
• Enforcement includes proactive audits, not only complaint-driven ones. Underpayment can surface and get corrected even if the affected worker never files anything.
• Apprenticeship pathways are formally protected. A registered apprentice has a defined, legally sound path to below-scale pay that still counts toward journeyman progression.

Cons

• Compliance overhead is real and recurring. Weekly certified payroll, classification tracking, and ratio monitoring add administrative cost a purely private job doesn't carry.
• Classification disputes can freeze cash flow. A contested classification can hold up payment while a coverage or conformance determination gets sorted out.
• Small contractors carry disproportionate risk. A firm with thin administrative capacity is statistically more likely to submit late or inaccurate certified payrolls than a larger, better-staffed one.
• Rate changes can outpace a signed bid. A wage determination's predetermined increase can raise costs mid-project with no built-in clause to pass that cost back to the owner.
• Enforcement penalties are severe relative to the underlying error. A three-year debarment for a contractor can follow from what began as an honest classification mistake, not deliberate fraud.

What to Do Next

1. Pull the wage determination that applies to your project's location and craft before doing anything else with pricing or staffing.
2. Map every task your crew will perform against the determination's classification list, and flag anything that doesn't clearly fit.
3. If a task doesn't match any listed classification, request a conformance or coverage determination from the contracting agency before the crew starts that work.
4. Confirm any apprentice's registration with the Department of Labor's Office of Apprenticeship or the relevant state agency in writing, before their first paycheck.
5. Set up a weekly certified payroll process that cross-checks against the daily site log, not only the payroll system's default classification field.
6. If you manage subcontractors, build a shared tracker for each sub's certified payroll status, classifications, and apprentice ratios.
7. If pay looks wrong on your own check, raise it with a union representative if one exists, or contact the Wage and Hour Division or your state labor agency directly.
8. Bring in a payroll compliance professional or an employment attorney once a classification dispute, a missed deadline pattern, or an audit notice appears, rather than after a violation has already compounded across months of payroll.

Frequently Asked Questions

Who decides what the prevailing wage rate is?

The Department of Labor's Wage and Hour Division sets the rate for federal jobs. It surveys wages and fringe pay on similar local projects. State agencies, like California's Department of Industrial Relations, set their own rates for state public-works jobs through a similar survey process.

Does a small contractor have to comply with certified payroll rules on every public job?

Yes, if the contract meets the coverage threshold. Federal rules generally start at contracts over $2,000. California requires compliance on public works jobs over $1,000, with narrow carve-outs for very small repair work.

Can a worker be paid a different classification rate for different tasks on the same day?

Yes. If a worker genuinely performs multiple distinct tasks in one day, each task gets paid at its own classification's rate for the hours spent on it, which is why an accurate daily site log matters.

What happens if a contractor simply refuses to pay back wages after a violation is found?

The contracting agency can withhold contract payments to cover the shortfall directly. Beyond that, unresolved cases can lead to debarment from future federal contracts for three years. Workers also keep a legal right to sue the contractor.

Is certified payroll the same everywhere, or does it vary by state?

It varies. Federal jobs generally use Form WH-347 or an equal form with the same wording. Many states, including California, use their own certified payroll form instead, filed with the awarding body.

How is overtime calculated on a prevailing wage job?

Overtime generally applies after eight hours in a day or 40 hours in a week. It is paid at one and one-half times the base rate. The exact trigger can shift by state and by the specific wage rate sheet.

Can an apprentice work on a prevailing wage job without being in a registered program?

Not at the reduced apprentice rate. A worker without confirmed sign-up in a Department of Labor or state-approved program has to be paid the full journeyman rate for their class.

Does prevailing wage apply to private commercial construction with no government funding?

No, generally not. Prevailing wage duties attach to public funding or a federal contract. A fully private commercial project typically falls outside both the federal rules and most state prevailing wage laws.

What records does a contractor have to keep, and for how long?

Detailed payroll and classification records for three years after all work on the main contract wraps up. That means hourly rates, fringe details, hours worked, deductions, and apprentice paperwork.

How does a worker file a complaint about suspected misclassification or underpayment?

Directly with the Wage and Hour Division or the state labor agency. Retaliation for filing that complaint, or for helping with the investigation that follows, is its own separate violation.

Can a general contractor be penalized for a subcontractor's wage violation?

Yes. The prime contractor is generally on the hook for every sub paying and reporting correctly. An agency can withhold funds from the prime contract no matter which tier caused the underpayment.

What's the difference between a coverage determination and a conformance request?

A coverage determination decides whether a project counts as covered public works at all. A conformance request is different: it asks the agency to classify one craft or task that doesn't fit any listed class.