Colorado Certified Payroll Requirements: How the Colorado Labor Peace Act and Prevailing Wage Law Apply to Public Works Contractors

Colorado's prevailing wage landscape has changed more in the past five years than in the prior three decades. After repealing its original prevailing wage law in 1985, Colorado went without state-level requirements for 36 years. Senate Bill 19-177 reestablished the requirement effective July 1, 2021, and a 2024 expansion extended coverage to certain state-subsidized private projects. For specialty contractors bidding on public work in Colorado, the reestablished law creates a certified payroll obligation that did not exist a few years ago, and getting ahead of the requirements now is the right time to build compliance into payroll operations.

Colorado's Reestablished Prevailing Wage Law

Colorado's prevailing wage requirement is governed by C.R.S. Section 8-17-101 et seq. The law was reestablished through SB 19-177 and supplemented by the Colorado Quality Apprenticeship Training Act of 2019. Together, these statutes set the framework for wage determinations, certified payroll filing, apprenticeship requirements, and enforcement on covered public projects.

Which Projects Are Covered

The prevailing wage requirement applies to every contractor awarded a contract of $500,000 or more for a public project by a state government agency. The threshold is based on the total project cost, not the value of any individual subcontract, so subcontractors on a qualifying project are covered regardless of their contract amount.

A critical distinction for Colorado contractors: projects that receive federal funding are exempt from the state prevailing wage requirement and instead follow federal Davis-Bacon rules. Colorado's state law explicitly carves out federally funded projects, which means contractors do not face a dual state-and-federal compliance obligation on the same project the way they might in California or New York. Contracts awarded by the Colorado Department of Transportation (CDOT) are also exempt from the state prevailing wage law, though CDOT projects that receive federal highway funds are subject to Davis-Bacon.

Energy sector public works projects carry additional requirements. On energy sector contracts of $1 million or more, contractors face expanded reporting obligations and apprenticeship mandates, including quarterly craft labor certifications submitted to the Division of Labor Standards and Statistics (DLSS).

How Wage Rates Are Determined

Colorado does not publish a single statewide rate schedule the way New York or California does. Prevailing wage rates are determined based on local labor market conditions for the specific job, trade, occupation, and geographic area. The Colorado Department of Personnel and Administration (DPA) sets rates for state-funded projects, drawing on wage survey data and collective bargaining agreements in the locality.

Rates vary by county, trade classification, and project type, so contractors must verify the applicable rate with the awarding agency at the time of bid. Unlike Davis-Bacon, which publishes centralized schedules on SAM.gov, Colorado's rate-setting process requires project-level confirmation.

Zone Pay

Colorado includes zone pay provisions in its wage determinations, adjusting the rate based on the distance between the worker's home and the jobsite. Contractors must apply zone pay correctly, and failure to account for zone differentials can create an underpayment even when the base rate is correct.

Certified Payroll Requirements

Certified payroll reporting is the primary enforcement mechanism for Colorado's prevailing wage law. The CDLE's Division of Labor Standards and Statistics oversees compliance, and contractors who fail to submit timely and accurate certified payrolls face investigation and penalties.

Filing Frequency and Content

Colorado law requires contractors and subcontractors on covered projects to submit certified payroll records to the contracting public agency. Each record must include:

• Worker name and trade classification

• Hours worked each day during the reporting period

• Wage rate paid (base rate plus fringe benefit breakdown)

• Fringe benefit contributions by type

• Certification that prevailing wage rates were met for all reported hours

On state-funded public projects, certified payrolls are generally submitted monthly to the contracting agency. On energy sector public works projects, contractors must provide weekly payroll records to project owners. On CDOT projects subject to Davis-Bacon, certified payrolls are submitted weekly through CDOT's LCPTracker system.

The filing frequency depends on the project's funding source, which means contractors working across different project types in Colorado may face different reporting schedules. A ​construction payroll system that generates certified payroll reports at both weekly and monthly intervals from the same underlying labor data prevents the inconsistencies that arise from maintaining separate reporting workflows.

Weekly Wage Payment Requirement

Separate from the certified payroll filing schedule, Colorado's prevailing wage law requires that covered workers be paid wages weekly. Contractors who typically run biweekly or semimonthly payroll must adjust their pay cycle for workers on covered public projects. Missing the weekly pay requirement is itself a violation, independent of whether the correct wage rate was paid.

Wages Must Be Included in Bid Solicitations

Colorado law requires that the awarding agency include the prevailing wage rates in the bid solicitation. Contractors should verify that the bid documents contain the applicable wage determination and that the rates remain current at the time of contract execution. Changes to rates between bid and award can affect labor cost calculations and should be accounted for in the bid.

Apprenticeship Requirements

The Colorado Quality Apprenticeship Training Act of 2019 established apprenticeship requirements that layer onto the prevailing wage obligation on larger projects.

Which Projects Require Apprenticeship Participation

On state-funded public projects of $1 million or more, contractors may only hire subcontractors that participate in apprenticeship programs registered with either Apprenticeship Colorado or the federal Department of Labor's Employment and Training Administration. The programs must demonstrate a proven track record of graduating apprentices, with required completion rates that increase over time:

• Through June 30, 2026: a 15% completion rate for at least three of the past five years

• From July 1, 2026, through June 30, 2031: a 20% completion rate

• From July 1, 2031, onward: a 30% completion rate

Contractors who employ apprentices at apprentice rates without valid registration in an approved program must pay those workers the full journeyman prevailing wage rate, creating a back-wage liability that compounds with every pay period.

The Colorado Labor Peace Act and Union Work

The Colorado Labor Peace Act (C.R.S. Section 8-3-101 et seq.) is a labor relations statute, not a prevailing wage law, but it directly affects how contractors manage union workforces on Colorado projects. Unlike right-to-work states, Colorado permits union security agreements, meaning a collective bargaining agreement can require all employees in a bargaining unit to pay union dues or agency fees as a condition of employment.

For specialty contractors operating under a CBA in Colorado, the Labor Peace Act means fringe benefit contributions and ​union payroll compliance obligations are enforceable through both the CBA and state law. Contractors working both union and non-union projects must configure ​construction payroll to handle CBA wage scales on union work and prevailing wage rates on state-funded public work.

Denver's Separate Prevailing Wage Ordinance

Denver maintains its own prevailing wage ordinance under Section 20-76 of the Denver Revised Municipal Code, enforced by the Denver Auditor's Office. The ordinance applies to city contracts costing $2,000 or more, a much lower threshold than the state's $500,000.

Denver's rates are set by the Career Service Authority Board and are generally consistent with federal Davis-Bacon rates, though Denver maintains classifications not found in the federal or state schedules. Denver requires weekly certified payroll (Denver form or WH-347), and the Auditor's Office audits actual weeks worked. Contractors on Denver city projects must comply regardless of whether the state prevailing wage law also applies.

Specialty contractors bidding on Denver public work should confirm the applicable rate schedule with the Denver Auditor's Office and verify whether any Denver-specific classifications apply to their trade. Using a ​payroll system that applies project-specific wage determinations ensures the correct rate is used on each project without manual reconfiguration.

Penalties and Enforcement

The CDLE's Division of Labor Standards and Statistics enforces Colorado's state prevailing wage law through complaint investigations and audits. Contractors found in violation face meaningful financial consequences.

Penalty Structure

Enforcement follows a progressive approach. DLSS may require contractors to compensate workers for underpaid wages or benefits and to pay fines of up to $25,000 per willful violation. Workers may also file a private lawsuit, and if a court finds underpayment, it must award double the amount of the underpayment plus interest. The treble-damage provision creates significant financial exposure for contractors whose violations span multiple workers and pay periods.

Prime contractors bear downstream liability for their subcontractors' prevailing wage compliance, a structure similar to Oregon's joint-and-several approach. Monitoring subcontractor ​certified payroll submissions is not optional for general and prime contractors on Colorado public work.

Build Colorado Compliance Into Your Payroll Now

Colorado's prevailing wage framework is still maturing. Trayd connects ​field labor tracking to ​construction payroll and ​certified payroll reporting, so hours, classifications, and wage rates flow into compliant filings without re-entry. ​See how Trayd handles state-level prevailing wage.

Frequently Asked Questions

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

What is the project threshold for Colorado prevailing wage?

The state prevailing wage requirement applies to public projects with a total cost of $500,000 or more awarded by state government agencies.

Does Colorado's prevailing wage law apply to federally funded projects?

No. Projects that receive federal funding are exempt from Colorado's state prevailing wage requirement and instead follow federal Davis-Bacon rules.

How often must certified payroll be filed in Colorado?

On state-funded public projects, certified payrolls are generally submitted monthly. Energy sector projects require weekly payroll records. CDOT projects under Davis-Bacon require weekly filing through LCPTracker.

Does Denver have its own prevailing wage requirements?

Yes. Denver's ordinance under Section 20-76 applies to city contracts of $2,000 or more, with rates set by the Career Service Authority Board and weekly certified payroll enforced by the Denver Auditor's Office.

What are the penalties for prevailing wage violations in Colorado?

DLSS may impose fines of up to $25,000 per willful violation. Courts must award double the underpaid amount plus interest in private lawsuits. Back wages to affected workers are also required.

Are apprenticeship requirements tied to Colorado's prevailing wage law?

Yes. On state-funded projects of $1 million or more, subcontractors must participate in registered apprenticeship programs with demonstrated completion rates that increase over time.