Public Works

Introduction

Public works make up only about 5% of the Law & Business exam — roughly six questions — but they are worth studying carefully, because on a public job almost every rule you learned for private work flips. The wage you must pay is different, the paperwork you must keep is different, and the remedy an unpaid subcontractor uses is different. Candidates who breeze through this section on the assumption that "a job is a job" tend to miss these questions, because the intuition they built studying private contracts leads them straight to the wrong answer.

A public work is, broadly, a construction project paid for in whole or in part with public funds — a school, a road, a county building, a water district pump station. Three things change the moment a project is public. First, workers must be paid the prevailing wage, a government-set rate that is usually well above the ordinary minimum wage. Second, the contractor must be registered with the Department of Industrial Relations (DIR) before it can even bid — a step entirely separate from holding a CSLB license. Third, because you cannot record a mechanics lien against public property, unpaid subs and suppliers are protected by a required payment bond and by public-works stop-payment-notice rights instead. Learn those three flips and you have the backbone of the section.

One current-law note before we begin. California's public-works registration regime comes from the SB 854 reforms, and its fee and renewal mechanics are adjusted periodically; the penalty dollar figures below are likewise set by statute and can change. Treat the numbers in this chapter as the values in force under current law, and confirm any figure against the live code or the DIR public-works pages before relying on it in practice.

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Learning objectives

After working through this chapter you should be able to:

• Define a public work and state the general $1,000 project trigger above which prevailing wage (not the ordinary minimum wage) must be paid (Lab. Code §§1720, 1720.2, 1771).
• Explain that prevailing-wage rates are determined and published by the DIR Director per craft and locality — not negotiated — and that they include fringe benefits (Lab. Code §§1773, 1773.1).
• State that a contractor or subcontractor must be registered with DIR before bidding public work, separate from CSLB licensure (Lab. Code §§1725.5, 1771.1).
• Describe the obligation to keep and furnish certified payroll records (Lab. Code §1776).
• Explain the apprenticeship ratio and dispatch obligations on public works (Lab. Code §1777.5).
• Identify the penalties for underpaying prevailing wages and for failing to pay public-works overtime, and explain debarment (Lab. Code §§1775, 1813).
• Explain why an unpaid sub cannot lien public property, and how the required payment bond and public-works stop-payment notice replace the lien (Civ. Code §§9550 et seq., 9100).
• Distinguish a bid bond, a performance bond, and a payment bond on a public contract (PCC §§7103, 10221; CCP §995.311).
• Recognize the skilled-and-trained-workforce requirement imposed on certain public projects and how it differs from ordinary apprenticeship ratios (PCC §2600 et seq.).

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Part A — Prevailing wage and the public-works wage regime

What a public work is, and the prevailing-wage requirement

A public work is generally a construction, alteration, demolition, installation, or repair project paid for in whole or in part out of public funds (Lab. Code §§1720, 1720.2). On public works, contractors and subcontractors must pay their workers the applicable prevailing wage — a government-set minimum wage-and-benefit rate for each craft and locality — rather than merely the ordinary state minimum wage (Lab. Code §1771). The requirement generally attaches once the project exceeds $1,000. Prevailing wage is typically substantially higher than minimum wage, and it must be paid to all covered workers on the project.

The exam's favorite trap here is the wage standard itself. Paying the California minimum wage does not satisfy a public-works obligation; the standard is the published prevailing rate, which is usually much higher. A second trap is the idea that prevailing wage only reaches giant projects — it does not. The trigger is a modest $1,000, so even fairly small public jobs are covered.

California example. A licensed contractor wins a $60,000 contract to repaint a county-owned community center. Because the job is paid with public funds and far exceeds $1,000, every painter on the crew must be paid the prevailing wage for the painting classification in that county — not the contractor's usual private-job rate, and not the state minimum wage. Paying anything less is an underpayment the state can pursue.

Determining the prevailing-wage rate

The rate is not something the contractor picks or negotiates with the worker. The Director of the Department of Industrial Relations (DIR) determines the applicable prevailing-wage rates for each craft, classification, and locality and publishes wage determinations that are updated periodically (Lab. Code §§1773, 1773.1). The contractor's job is to look up the correct current rate for the trade and location of the project and pay at least that rate — including the required fringe-benefit component — to every covered worker.

Two misconceptions get tested. The first is that a contractor and a willing worker can simply agree on a lower number; they cannot, because the published determination is a floor. The second is that prevailing wage is only a base hourly figure — in fact the determination includes an employer-paid benefits component on top of the base rate, so "just the hourly cash wage" is an incomplete answer.

California example. Before bidding a public school reroofing job in a particular county, a roofing contractor pulls the DIR Director's current wage determination for the roofer classification in that locality. The determination lists both a base hourly rate and a fringe-benefit amount. The contractor must build its bid around paying at least that combined figure — not a rate it negotiates with its crew.

DIR contractor and subcontractor registration

Holding a CSLB license is not enough to work public jobs. Separately, a contractor or subcontractor must be registered with DIR to bid on or perform public works (Lab. Code §§1725.5, 1771.1). This registration regime — a product of the SB 854 reforms — requires paying a fee and maintaining current registration, and it is a prerequisite to bidding: an unregistered contractor generally cannot lawfully be awarded a public-works contract. Public projects are also reported to DIR (through the PWC-100 project registration).

The exam tests two points. First, DIR registration is a distinct step, independent of CSLB licensure — a CSLB license alone does not qualify you to bid public work. Second, registration must be in place before bidding; a contractor cannot win the award first and register afterward. Missing or lapsed registration disqualifies the bid.

California example. A general contractor with a valid Class B license assumes its CSLB license is all it needs and submits a bid on a city public-works project. Because it never registered with DIR as a public-works contractor, its bid is not eligible for award. A competitor with the same license class — but current DIR registration — is the one that can actually be awarded the job.

Verify-often flag. The DIR public-works registration fee and renewal mechanics (SB 854 regime) are adjusted from time to time. The requirement to register before bidding is stable; confirm the current fee/renewal specifics at the DIR public-works pages before relying on them.

Certified payroll records

Public works run on proof. Contractors and subcontractors must keep certified payroll records showing each worker's classification, hours worked, and the wages and benefits paid, and must furnish those records as required — commonly by submitting them electronically to DIR (Lab. Code §1776). Certified payroll is the mechanism by which the state verifies that prevailing wages were actually paid. Failing to keep or submit the records, or falsifying them, carries penalties and can support a finding of underpayment.

The tested points are simple but easy to miss. Ordinary private-job payroll records do not satisfy the certified-payroll requirement — the certified form and the certification itself are what the law demands. And certified payroll is not optional just because a contractor believes it paid everyone correctly; the obligation to document and furnish is independent of good intentions.

California example. A subcontractor on a public transit project pays its electricians the correct prevailing rate but keeps only its usual internal timesheets and never submits certified payroll to DIR. Even though the wages were right, the failure to maintain and furnish certified payroll is itself a violation and exposes the sub to penalties.

Apprenticeship requirements on public works

Public-works projects generally require contractors to employ apprentices from state-approved apprenticeship programs in a set ratio to journey-level workers for each apprenticeable craft, and to make the required apprenticeship contributions (Lab. Code §1777.5). Practically, the contractor must request dispatch of apprentices from the approved program and meet the applicable ratio. The goal is workforce training. Failing to use apprentices as required is a violation with its own penalties, separate from the wage rules.

Watch the boundary the exam draws: apprenticeship ratios of this kind are a public-works obligation and do not apply to ordinary private jobs the same way. And a contractor cannot simply decline to use apprentices without consequence — the dispatch request and ratio are mandatory where the rule applies.

California example. On a public library construction project, an electrical subcontractor must request apprentice electricians from a state-approved apprenticeship program and staff the job so that apprentices work in the required ratio to its journey-level electricians. Skipping that step — running an all-journeyman crew because it is simpler — is a §1777.5 violation.

Penalties for prevailing-wage and overtime violations

Getting the wages wrong on a public job costs more than the shortfall. Underpaying prevailing wages triggers penalties in addition to paying the back wages owed: the law imposes a per-day, per-worker penalty for underpayment — up to $200 per day, per underpaid worker under Lab. Code §1775 — assessed on top of the wages themselves. Separately, failing to pay the required overtime rate on public work carries its own penalty — $25 per worker, per day of overtime violation, under Lab. Code §1813. And for serious or repeated violations, enforcement can lead to debarment: a period during which the contractor is barred from bidding on public works at all.

Two misconceptions are tested. The first is that the only consequence of underpayment is quietly paying the difference later — in reality the penalties and possible debarment stack on top. The second is that overtime rules do not apply to public jobs — they do, with their own §1813 penalty.

California example. A contractor underpays five laborers on a public road project for a stretch of the job. Beyond repaying the back wages to all five, the contractor faces a per-day, per-worker penalty under §1775 (up to $200/day each), plus §1813 overtime penalties for any unpaid overtime, and — if the violations are serious or repeated — a period of debarment that keeps it off public bids entirely.

Verify-often flag. The §1775 maximum penalty (up to $200/day/worker) is a statutory ceiling the Labor Commissioner applies within a range based on the nature of the violation, and penalty figures are subject to legislative change. The §1813 overtime penalty is $25 per worker per day. Confirm both against the live Labor Code before relying on exact dollar figures.

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Part B — Bonds and payment remedies on public works

No mechanics lien on public property — the payment bond and stop notice instead

This is the single most important remedies concept in the section, and the one candidates most often get wrong by importing private-work habits. You cannot record a mechanics lien against public property. A courthouse, a school, a public road — none of it can be encumbered by a private lien. Instead, public works are protected by a required payment bond that the prime contractor must furnish on public projects above a statutory threshold, guaranteeing payment to subcontractors and suppliers (Civ. Code §9550 et seq.). An unpaid claimant pursues a claim against that payment bond, and may also serve a public-works stop payment notice to reach undisbursed public funds still held by the public agency (Civ. Code §9100). These bond and stop-notice remedies replace the lien that simply is not available on a public job.

The exam's trap is the mirror image of the private-work rule you learned in Section 4. There, an unpaid sub can lien the owner's private property. Here, that door is closed — so answering a public-works nonpayment question with "record a mechanics lien" is wrong. The other misconception to bury is that subs have no protection at all on public work; they are protected, just through the payment bond and stop notice rather than a lien.

California example. A drywall subcontractor finishes its work on a new public elementary school and is never paid by the prime. It cannot lien the school — it is public property. Its remedy is to make a claim on the prime's payment bond, and, if the district still holds undisbursed funds, to serve a public-works stop payment notice to freeze money the agency has not yet paid out.

Bid, performance, and payment bonds on public contracts

Public contracts commonly require several surety bonds, and the exam tests the distinct purpose of each. All three are three-party surety arrangements — the principal (contractor), the obligee (the public agency or, for a payment bond, the protected claimants), and the surety — and if the surety has to pay out, the contractor must reimburse it (PCC §§7103, 10221; CCP §995.311):

• Bid bond (bid security): guarantees that a winning bidder will actually enter into the contract (and post the required bonds). If the low bidder backs out, the bid bond covers the agency's cost of going to the next bidder.
• Performance bond: guarantees that the contractor will complete the work according to the contract. If the contractor defaults, the surety arranges or funds completion.
• Payment bond: guarantees payment to subcontractors and suppliers — the bond that unpaid claimants pursue when there can be no lien (tying back to the previous subtopic).

The classic trap is mixing up the performance and payment bonds: a performance bond does not protect subs' right to payment — that is the payment bond's job. Another is thinking a bid bond obligates the surety to complete the work — it does not; it only backs the bidder's promise to sign the contract.

California example. A general contractor is the low bidder on a county public-works job. To bid, it posted a bid bond; to sign the contract, it must furnish a performance bond guaranteeing completion and a payment bond guaranteeing its subs and suppliers get paid. When a paving subcontractor later goes unpaid, it looks to the payment bond — not the performance bond — for recovery.

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Part C — Skilled-and-trained-workforce requirements

A higher workforce standard on certain public projects

Beyond the ordinary apprenticeship ratios, certain public projects require the contractor and its subcontractors to use a skilled and trained workforce (PCC §2600 et seq.). This means a set percentage of the workers in each apprenticeable craft must be graduates of, or apprentices in, state-approved apprenticeship programs, and the contractor must provide monthly compliance reports where the requirement applies. It is an additional workforce mandate, imposed on top of — and higher than — the basic apprenticeship ratio, on the specific projects where the law requires it.

Two points are testable. First, the skilled-and-trained-workforce rule does not apply to all public works — it applies to specified projects (for example, certain large or particular categories the Legislature designates). Second, meeting the basic apprenticeship ratio does not automatically satisfy the skilled-and-trained standard; the skilled-and-trained rule sets a distinct, higher bar tied to a percentage of program-trained workers, plus reporting.

California example. A contractor on a public project that carries a skilled-and-trained-workforce requirement must ensure that a required percentage of its workers in each craft graduated from (or are enrolled in) state-approved apprenticeship programs, and must file monthly reports demonstrating compliance. A contractor that met only the ordinary apprentice-to-journeyman ratio, without hitting the skilled-and-trained percentage, would still be out of compliance on that project.

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Key numbers & deadlines

Prevailing wage applies: on public works generally where the project exceeds $1,000 (Lab. Code §§1720, 1720.2, 1771). The standard is the published prevailing rate, not the state minimum wage.

Who sets the rate: the DIR Director, per craft and locality, in published wage determinations that include fringe benefits (Lab. Code §§1773, 1773.1). It is not negotiable.

DIR registration: contractor and subcontractor must be registered with DIR before bidding public work — separate from the CSLB license (Lab. Code §§1725.5, 1771.1). SB 854 regime; confirm current fee/renewal mechanics.

Certified payroll: must be kept and furnished (often electronically to DIR) showing classification, hours, wages, and benefits (Lab. Code §1776).

Apprenticeship: required ratio of state-approved-program apprentices to journey workers; contractor must request dispatch (Lab. Code §1777.5).

Penalties: underpayment — up to $200 per worker, per day (Lab. Code §1775); public-works overtime failure — $25 per worker, per day (Lab. Code §1813); serious/repeated violations can lead to debarment from public bidding. Confirm dollar figures against the live code.

No lien on public property. Remedies are the required payment bond (Civ. Code §9550 et seq.) and the public-works stop payment notice reaching undisbursed public funds (Civ. Code §9100).

Three public-contract bonds: bid bond (bidder will sign) · performance bond (work will be completed) · payment bond (subs and suppliers will be paid) — three-party surety arrangements (PCC §§7103, 10221; CCP §995.311).

Skilled-and-trained workforce: on specified public projects, a percentage of each craft must be apprenticeship-program graduates/apprentices, with monthly compliance reports (PCC §2600 et seq.) — a higher bar than the basic apprenticeship ratio.

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Summary

Public Works is a small section, but it tests a genuinely different world from private construction, and the whole section rewards spotting the flips. On a public job — any project paid with public funds and generally over $1,000 — workers must be paid the prevailing wage, a DIR-published rate per craft and locality that includes fringe benefits and is far above the ordinary minimum wage (Lab. Code §§1720, 1771, 1773). Before it can even bid, a contractor must be registered with DIR, a step entirely separate from its CSLB license (Lab. Code §1725.5). Once on the job, it must keep and furnish certified payroll (Lab. Code §1776) and staff the work with apprentices in the required ratio (Lab. Code §1777.5). Getting the wages wrong costs more than the back pay: per-day, per-worker penalties under §1775, overtime penalties under §1813, and possible debarment from future public work.

The other pillar of the section is remedies. Because you cannot lien public property, the law substitutes a required payment bond and a public-works stop payment notice as the way unpaid subs and suppliers recover (Civ. Code §§9550, 9100). Public contracts also layer in a family of surety bonds — the bid bond backs the promise to sign, the performance bond backs completion, and the payment bond backs payment to subs — and confusing the performance bond with the payment bond is the most common error. Finally, some specified projects impose a skilled-and-trained-workforce standard (PCC §2600 et seq.) stricter than the ordinary apprenticeship ratio. Learn the wage flip, the registration step, and the no-lien/payment-bond remedy, and you will capture the bulk of this section's points.

Key takeaways

• Prevailing wage, not minimum wage. Public works (generally over $1,000) require the published prevailing rate, which includes fringe benefits and is set by the DIR Director — never negotiated (Lab. Code §§1720, 1771, 1773).
• DIR registration comes before bidding. A CSLB license alone does not qualify you for public work; you must be registered with DIR first (Lab. Code §§1725.5, 1771.1).
• Keep certified payroll. Classification, hours, wages, and benefits, furnished as required — ordinary private-job records do not count (Lab. Code §1776).
• Use apprentices in the required ratio, dispatched from state-approved programs (Lab. Code §1777.5).
• Underpayment costs more than back wages. Up to $200/day/worker (§1775) plus $25/day/worker overtime penalties (§1813), and serious or repeated violations can trigger debarment.
• No mechanics lien on public property. The remedy is a claim on the required payment bond (Civ. Code §9550 et seq.) and, for undisbursed funds, a public-works stop payment notice (Civ. Code §9100).
• Know the three bonds. Bid bond = the bidder will sign; performance bond = the work will be finished; payment bond = the subs get paid. Do not swap performance and payment (PCC §§7103, 10221; CCP §995.311).
• Skilled-and-trained workforce is a higher, project-specific standard requiring apprenticeship-program-trained workers plus monthly reporting — meeting the basic ratio is not enough (PCC §2600 et seq.).

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Sources

Official California primary law, cited to the Legislative Information site (leginfo.legislature.ca.gov), with agency guidance from the Department of Industrial Relations (dir.ca.gov). Statutory figures reflect law in force as of the 2026 edition. The DIR public-works registration regime derives from SB 854; its fee and renewal mechanics are adjusted periodically — confirm current specifics on the DIR public-works pages.

• Cal. Lab. Code § 1720; § 1720.2 — definition of "public works" (projects paid in whole or part with public funds).
• Cal. Lab. Code § 1771 — requirement to pay prevailing wages on public works (general $1,000 project trigger).
• Cal. Lab. Code § 1773; § 1773.1 — DIR Director determines and publishes prevailing-wage rates per craft and locality, including the fringe-benefit component.
• Cal. Lab. Code § 1725.5; § 1771.1 — mandatory DIR contractor/subcontractor registration to bid or work on public works (SB 854 regime); registration required before bid award.
• Cal. Lab. Code § 1776 — certified payroll records: must be kept and furnished.
• Cal. Lab. Code § 1777.5 — apprenticeship ratio and dispatch requirements on public works.
• Cal. Lab. Code § 1775 — penalties for underpayment of prevailing wages (up to $200 per worker, per day; a statutory ceiling applied within a range — confirm current figure against the live code).
• Cal. Lab. Code § 1813 — penalty for failure to pay required overtime on public works ($25 per worker, per day).
• Cal. Civ. Code § 9550 et seq. — required payment bond on public works (no mechanics lien available against public property).
• Cal. Civ. Code § 9100 — public-works stop payment notice claimants (reaching undisbursed public funds).
• Cal. Pub. Contract Code § 7103; § 10221 — performance and payment bond requirements on public contracts.
• Cal. Code Civ. Proc. § 995.311 — surety bonds / bid security for public contracts.
• Cal. Pub. Contract Code § 2600 et seq. — skilled-and-trained-workforce requirements on specified public projects, including monthly compliance reporting.
• DIR, Public Works (https://www.dir.ca.gov/public-works/publicworks.html) — registration, certified payroll, and the $1,000 prevailing-wage threshold.
• DIR, Prevailing Wage and DIR/OPRL, Prevailing Wage Determinations — official current wage rates by craft and locality.
• DLSE, Prevailing Wage Manual — enforcement and compliance guidance.
• CSLB, Law and Business Study Guide — official exam content outline (Section 6: Public Works).
• CSLB, California Contractors License Law & Reference Book (2026 ed.) — reprints related code and commentary.

Penalty dollar figures (§§ 1775, 1813) and the DIR registration fee/renewal mechanics are subject to legislative and administrative change; verify against the live Labor Code and DIR pages before relying on exact amounts.