Oregon Certified Payroll Requirements: What Contractors Need to Know About BOLI, PWR Law, and Weekly Submission

Oregon's prevailing wage framework, often called the "Little Davis-Bacon Act," has protected workers on public construction projects since 1959. The Prevailing Wage Rate (PWR) law, codified in Oregon Revised Statutes Chapter 279C (Sections 800 through 870), requires contractors and subcontractors on covered public works to pay wages that meet or exceed the rates published by the Bureau of Labor and Industries (BOLI). Certified payroll reporting is a core enforcement mechanism, and Oregon's requirements differ from federal rules in filing frequency, form requirements, and penalty structure. Contractors who treat Oregon compliance as identical to federal Davis-Bacon compliance often discover the differences during an investigation, which is the worst time to learn.

Oregon's framework is smaller in scale than California's or New York's, but no less exacting in its requirements. The combination of monthly filing deadlines, semi-annual rate updates, mandatory apprenticeship utilization, and joint-and-several liability for subcontractor violations means contractors must build compliance into their payroll workflow, not bolt it on as an afterthought.

When Oregon's prevailing wage law applies

Oregon's PWR law applies to public works contracts with a project value exceeding $50,000. Public housing projects carry a higher threshold of $100,000. The definition of "public works" under ORS 279C.800 covers construction, reconstruction, major renovation, painting, and related work on public improvements financed in whole or in part by a public agency.

Who counts as a public agency

Public agencies under the PWR law include state agencies, counties, cities, school districts, community colleges, and special districts. Federal-aid construction projects within Oregon may trigger both the state PWR law and federal Davis-Bacon requirements simultaneously. When both apply, the contractor must pay the higher of the two rates for each trade classification.

Subcontractor obligations

Every subcontractor at every tier on a covered project must pay prevailing wages. Unlike some states, Oregon does not provide a de minimis subcontract exemption. Additionally, Oregon Senate Bill 426 creates joint and several liability for unpaid wages throughout the subcontracting chain, meaning the prime contractor can be held liable for a subcontractor's wage violations even after paying the subcontractor in full.

BOLI rate determinations

BOLI publishes prevailing wage rate schedules that cover trade classifications across the state. Rates vary by region and are updated on a regular cycle, with amendments published on April 1 and October 1 each year to reflect changes in specific classifications.

Rate structure

Each classification in the BOLI schedule includes a combined wage rate that covers both the base hourly wage and fringe benefits. Employers can split the total between wages and benefits in different proportions, as long as the combined payment meets or exceeds the published total rate. Fringe benefit credit is only available when payments meet the requirements of ORS 279C.800(1) and OAR 839-025-0040.

Apprenticeship requirements

Oregon requires contractors on public works projects to employ apprentices for a minimum percentage of total labor hours in covered trades, generally 15% under ORS 279C.800(4). Apprentices must be enrolled in programs registered with the Oregon Apprenticeship and Training Division. Paying a worker at the apprentice rate without valid registration in an approved program is a violation.

Certified payroll filing requirements

Oregon's certified payroll requirements are specific to the state and should not be confused with federal WH-347 filing rules.

Filing form and content

Contractors and subcontractors must file certified payroll records using the WH-38 form or a substitute that captures all required data elements for each worker:

• Full name and address

• Trade classification per the BOLI schedule

• Hours worked by day during the reporting period

• Hourly rate of pay (basic wage plus fringe benefit breakdown)

• Deductions and net pay

BOLI does not mandate its exact form, but the filing must include all required information. BOLI does not mandate use of its exact form, but the filing must include complete data on each worker: name, trade classification, hours worked by day, rate of pay, and fringe benefit payments.

Filing frequency and deadlines

Certified payroll statements must be completed for each week a worker is employed on a public works project. Certified payrolls are then submitted to the public agency monthly, by the fifth business day of the following month. While the underlying records are tracked weekly, the monthly submission schedule means contractors need systems that capture weekly data and aggregate it for monthly filing.

Records retention

Oregon requires contractors to maintain payroll records for at least four years from the date of project completion. BOLI can audit up to three years back, and the additional year provides a buffer against late-filed complaints.

Penalties and enforcement

BOLI enforces Oregon's PWR law through complaint investigations and proactive audits. The penalty structure gives BOLI significant enforcement tools.

Civil penalties

BOLI may impose civil penalties of up to $5,000 per violation. Willful violations of ORS 279C.305 can trigger penalties of up to $20,000. If violations are ongoing, each day can count as a separate violation under ORS 279C.865, which means penalties can escalate quickly on a multi-week project.

Contractors also face back-wage liability for underpaid amounts plus interest. BOLI can debar contractors for three years for intentionally falsifying certified payroll statements, blocking them from receiving public works contracts or subcontracts during that period.

Common compliance errors

Worker misclassification is the most frequent source of underpayment violations in Oregon. Common compliance errors that trigger BOLI penalties include:

• Misclassifying workers into a lower-rate trade classification

• Failing to apply updated BOLI rate amendments published on April 1 or October 1

• Using federal Davis-Bacon rates instead of Oregon BOLI rates on state-funded projects

• Paying apprentice rates to workers not enrolled in a registered apprenticeship program

• Failing to post required prevailing wage information at the jobsite

• Missing the monthly certified payroll filing deadline to the public agency

How Oregon certified payroll differs from federal requirements

Contractors accustomed to federal Davis-Bacon compliance need to understand where Oregon diverges. The differences are practical and affect how ​construction payroll is configured.

Federal certified payroll (WH-347) is filed weekly with the contracting agency. Oregon certified payroll (WH-38 or equivalent) is tracked weekly but submitted monthly to the public agency. When both apply to the same project, the contractor must file both on their respective schedules.

Oregon's apprenticeship requirements are state-specific: apprentices must be registered with Oregon's Apprenticeship and Training Division, not just with the federal Office of Apprenticeship. Oregon's joint and several liability provision (SB 426) extends the prime contractor's financial exposure deeper into the subcontracting chain than federal law requires.

What Oregon contractors must know about overtime

Under ORS 279C.540, contractors and subcontractors on public works must pay overtime at not less than one and one-half times the basic rate of pay for all hours worked beyond 8 in a day, 40 in a week, and on legal holidays. Oregon's overtime rule is daily, not just weekly, which differs from the FLSA's weekly-only threshold on non-public work.

For ​construction payroll purposes, this means the payroll system must track hours by day, not just by period, and calculate daily overtime separately from weekly overtime on covered projects. A worker who works 10 hours on Monday and 6 hours on Tuesday has 2 overtime hours on Monday, even though the weekly total is only 16. Contractors accustomed to weekly-only overtime calculations on private work must configure their payroll differently for Oregon public works.

Posting requirements

Contractors must post the current prevailing wage rate schedule in a conspicuous location at the jobsite for the duration of the project. Failure to post is itself a violation, separate from any wage payment issue, and BOLI can impose penalties for each day the posting is absent. The posting requirement is easy to meet but frequently overlooked on smaller projects or when crews mobilize quickly.

File Oregon certified payroll with confidence

Oregon's PWR law and BOLI enforcement create a compliance environment where accuracy in ​certified payroll and prevailing wage reporting directly protects the contractor's ability to bid future public work. Trayd connects ​field labor data to ​payroll and compliance reporting in one system, so weekly records are captured accurately and ready for monthly filing. Pairing that with ​scheduling and dispatch that assigns workers to the correct project and classification from the start reduces the classification errors that drive most BOLI violations.

When both Oregon PWR and federal Davis-Bacon apply to the same project, Trayd can track both rate structures simultaneously, applying the higher rate for each classification and generating the correct form for each filing obligation. ​See how Trayd handles state-level certified payroll.

Frequently Asked Questions

The questions below address what contractors ask most about Oregon certified payroll and BOLI compliance. Answers reflect current state law and should be confirmed with legal counsel for project-specific guidance.

What is the project threshold for Oregon prevailing wage?

The PWR law applies to public works contracts exceeding $50,000 in project value, or $100,000 for public housing projects.

How often must Oregon certified payroll be filed?

Certified payroll records are completed weekly but submitted to the public agency monthly, by the fifth business day of the following month.

What form is used for Oregon certified payroll?

The WH-38 form or any substitute that includes all required data elements. BOLI does not require its exact form as long as all information is present.

What happens if a contractor falsifies certified payroll in Oregon?

BOLI can debar the contractor for three years, blocking them from public works contracts and subcontracts. Additional civil penalties and back-wage liability apply.

Does Oregon require apprenticeship on public works projects?

Yes. Contractors must employ apprentices for a minimum of 15% of total labor hours in covered trades, and apprentices must be registered with Oregon's Apprenticeship and Training Division.

Can a prime contractor be liable for a subcontractor's wage violations in Oregon?

Yes. Under Senate Bill 426, prime contractors face joint and several liability for unpaid wages in the subcontracting chain, even after paying the subcontractor in full.