Lou Perez
Apr 13, 2026

Union Agent and CPR Agent: The Complete Compliance Solution for General Contractors

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General contractors managing public works projects in California face significant compliance challenges. They must adhere to collective bargaining agreements (CBAs) that set wages, benefits, and work rules for each union trade, while also submitting accurate, audit-ready certified payroll reports (CPRs) on a weekly basis.

Errors on either front are costly. Misinterpreting a CBA can result in underpayments, grievances, or incorrect fringe contributions. Submitting inaccurate CPRs may lead to back pay, project delays, or debarment. For GCs overseeing multiple subcontractors, these risks increase significantly.

Lumber’s Union Agent and Certified Payroll Agent address these challenges directly. Together, they provide a comprehensive compliance solution, offering GCs the visibility and accuracy needed to prevent issues before they result in penalties.

The Two Compliance Worlds GCs Have to Navigate

To understand the value of these two agents, consider the daily compliance demands GCs face.

Each trade on a union project operates under its own CBA, with unique wage scales, fringe rates, and overtime rules. A mid-sized GC may manage 10 to 20 agreements, each spanning hundreds of pages. Expecting project managers to access all this information instantly is unrealistic.

Certified payroll requires weekly submissions, with each WH-347 form accurately reflecting prevailing wages, fringe benefits, and overtime rates for every worker. California’s prevailing wage laws are especially strict, with state wage determinations often exceeding federal rates and close compliance monitoring.

Although related, CBAs and CPRs are often managed separately, creating opportunities for errors. Relying on different vendors for each process leads to a fragmented, manual approach that is slow, costly, and prone to oversight.

What the Union Agent Does

Lumber’s Union Agent streamlines CBA management by converting extensive contract documents into an organized, searchable knowledge base.

GCs and unions upload their CBAs to the platform, where AI analyzes each document and extracts key information, organizing it into practical categories for jobsite use.

Within minutes, users receive structured insights on agreement details, wage scales, fringe rates, overtime rules, shift differentials, holiday and sick leave, remittance requirements, reporting deadlines, and audit clauses. Special provisions, such as travel pay or jurisdiction definitions, are clearly highlighted.

Users can ask questions in plain language and receive immediate, cited answers drawn directly from the relevant agreement. The system references the specific section, ensuring responses are both fast and verifiable.

For GCs managing multiple trades and contractors, this transforms operations. Answers to questions about overtime or fringe contributions are available instantly, eliminating lengthy document searches.

What the Certified Payroll Agent Does

While the Union Agent clarifies the rules, the Certified Payroll Agent ensures those rules are followed in every payroll submission.

Available for California projects, the CPR Agent enables GCs and subcontractors to upload WH-347 payroll documents for pre-submission analysis. The AI reviews each report across four key compliance areas.

First, the agent checks wage compliance by comparing each worker’s pay rate to both federal Davis-Bacon and California prevailing wage rates for their classification and county. For example, in a Riverside County project, the system flagged a Journeyman Roofer paid below the required rate, allowing correction before submission.

Second, the agent verifies overtime compliance, ensuring any overtime is compensated at the correct premium rates. For California projects, state thresholds and rates are applied automatically.

Third, the agent checks fringe benefit compliance, verifying that contributions are recorded and meet federal requirements for each classification. If fringe data is missing, the agent flags the record for correction before submission.

Fourth, the agent reviews apprenticeship ratio compliance, confirming that required apprentice-to-journeyman hour ratios are met or noting when the requirement does not apply.

The agent also offers an interactive Q&A feature. Payroll managers can ask questions such as “Are there any compliance violations for this week?” and receive immediate, data-driven answers, streamlining the review process.

Why These Two Agents Work Better Together

Compliance for prevailing wage projects begins with understanding CBA or wage determination requirements and ends with verifying their accurate reflection in every certified payroll submission.

Managing these steps separately or manually can cause disconnects. For example, a project manager may misapply a wage rate due to classification errors, or a payroll preparer may enter incorrect rates without access to the proper wage determination.

Using Union Agent and CPR Agent together closes this gap. Union Agent defines the rules across all CBAs, while CPR Agent verifies their correct application in each payroll submission, covering both ends of the compliance process.

This is especially valuable for GCs managing multiple subcontractors. While subcontractors submit their own payroll reports, the GC remains responsible for overall compliance. An AI review layer provides oversight that would otherwise require dedicated staff or costly third-party services.

Replacing a Fragmented, Manual Process

Traditionally, certified payroll compliance has relied on manual reviews, third-party audits, and institutional knowledge concentrated among a few individuals. This approach is costly, slow, and difficult to scale.

Third-party review services often charge per report or project, with turnaround times measured in days. Remediating violations after the fact is far more expensive than proactive review.

Union Agent and CPR Agent replace fragmented processes with an in-house, on-demand solution that does not require specialized compliance expertise. Project managers can upload payroll reports for rapid analysis, supervisors can quickly check overtime rules, and payroll coordinators can confirm fringe requirements before processing.

This accessibility makes AI-powered compliance practical. Both agents are designed for timely use by the right personnel.

A Smarter Way to Stay Ahead of Compliance

California prevailing wage compliance continues to grow more complex. Wage determinations are updated frequently, classification rules change, apprenticeship requirements expand, and union agreements are renegotiated with new provisions.

GCs relying on manual processes and periodic reviews will always be reactive. Integrating an AI-powered compliance layer into weekly workflows enables early detection of issues and prevents violations from escalating.

Union Agent provides instant, cited answers to contract questions, while CPR Agent delivers automated, pre-submission compliance analysis for California projects. Together, they offer GCs a complete, integrated compliance solution that keeps pace with construction demands.

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Introduction

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Other resources

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Mandatory Deadlines | Internal Review/Best Practice 
Critical Construction Compliance | Awareness Week
January 2026
Jan 2, 7, 9, 14, 16, 21, 23, 28 & 30
Semi-Weekly Federal Tax Deposit Due
Sat-Tue wages → Friday deposit; Wed-Fri wages → Wednesday deposit
Thursday, Jan 15, 2026
Deadline for December 2025 Monthly Depositor Tax Liabilities
Monday, Feb 2, 2026
(Standard Jan 31 deadline shifted to next business day as it falls on a weekend)
1. File Form 941 (Employer's Quarterly Federal Tax Return) for Q4 2025
2. Distribute Form W-2s to employees for 2025
3. Distribute Form 1099-NEC to subcontractors for 2025
4. File Form W-2s with the Social Security Administration (SSA)
5. File Form 1099-NEC with IRS
6. File Form 1096 (summary of 1099s)
7. State Unemployment and Quarterly Wage Reports for Q4 2025
These reports are typically due Jan 31. Verify state-specific deadlines and file accordingly.
Annual Depositor Deadline (Form 944 Filers)
Annual depositors must file Form 944 and deposit taxes with the return by this date. 
February 2026
Feb 4, 6, 11, 13, 18, 20, 25 & 27
Semi-Weekly Federal Tax Deposit Due
Sat-Tue wages → Friday deposit; Wed-Fri wages → Wednesday deposit
Tuesday, Feb 10, 2026
Extended deadline to file Form 941 (Q4 2025)
Only if all Q4 2025 federal tax deposits were made on time.
Tuesday, Feb 17, 2026
Deadline for January Monthly Depositor tax liabilities
(Feb 15 is a Sunday and Feb 16 is President’s Day)
March 2026
Mar 4, 6, 11, 13, 18, 20, 25 & 27
Semi-Weekly Federal Tax Deposit Due
Sat-Tue wages → Friday deposit; Wed-Fri wages → Wednesday deposit
Monday, Mar 2, 2026
File Form 1099-MISC with the IRS (paper filing)
(Standard Feb 28 deadline shifted to next business day)
Monday,
Mar 16, 2026
Deadline for Feb Monthly Depositor tax liabilities
April 2026
Apr 1, 3, 8, 10, 15, 17, 22, 24 & 29
Semi-Weekly Federal Tax Deposit Due
Sat-Tue wages → Friday deposit; Wed-Fri wages → Wednesday deposit
Wednesday
Apr 15, 2026
Deadline for March Monthly Depositor tax liabilities 
Thursday, Apr 30, 2026
1. File Form 941 for Q1 2026
2. File State Quarterly Wage Reports (Verify state-specific deadlines)
Internal Compliance Review: Review certified payroll reports and compliance for Q1.
Certified payroll reports are due WEEKLY for prevailing wage projects.
May 2026
May 1, 6, 8, 13, 15, 20, 22, 27 & 29
Semi-Weekly Federal Tax Deposit Due
Sat-Tue wages → Friday deposit; Wed-Fri wages → Wednesday deposit
Friday, May 15, 2026
Deadline for April Monthly Depositor tax liabilities
June 2026
Jun 3, 5, 10, 12, 17, 19, 24 & 26
Semi-Weekly Federal Tax Deposit Due
Sat-Tue wages → Friday deposit; Wed-Fri wages → Wednesday deposit
Monday, Jun 15, 2026
Deadline for May Monthly Depositor tax liabilities 
Tuesday, Jun 30, 2026
1. Mid-year review of workers' compensation insurance
2. Review certified payroll compliance for prevailing wage projects
Certified payroll reports are due WEEKLY for prevailing wage projects.
July 2026
Jul 1, 3, 8, 10, 15, 17, 22, 24, 29 & 31
Semi-Weekly Federal Tax Deposit Due
Sat-Tue wages → Friday deposit; Wed-Fri wages → Wednesday deposit
Wednesday, Jul 15, 2026
Deadline for June Monthly Depositor tax liabilities 
Friday, Jul 31, 2026
1. File Form 941 for Q2 2026
2. File state quarterly wage reports (Verify state-specific deadlines)
3. Review and update fringe benefit rates for union projects
August 2026
Aug 5, 7, 12, 14, 19, 21, 26 & 28
Semi-Weekly Federal Tax Deposit Due
Sat-Tue wages → Friday deposit; Wed-Fri wages → Wednesday deposit
Monday, Aug 17, 2026
Deadline for July Monthly Depositor tax liabilities 
(Aug 15 is a Saturday)
September 2026
Sep 2, 4, 9, 11, 16, 18, 23, 25 & 30
Semi-Weekly Federal Tax Deposit Due
Sat-Tue wages → Friday deposit; Wed-Fri wages → Wednesday deposit
Sep 7 - Sep 11, 2025
National Payroll Week
Take a moment to appreciate yourself this week. You deserve it.
Tuesday, Sep 15, 2026
Deadline for August Monthly Depositor tax liabilities 
Wednesday Sep 30, 2026
1. Review job costing and labor burden rates
2. Prepare for year-end certified payroll audits
October 2026
Oct 2, 7, 9, 14, 16, 21, 23, 28 & 30
Semi-Weekly Federal Tax Deposit Due
Sat-Tue wages → Friday deposit; Wed-Fri wages → Wednesday deposit
Thursday, Oct 15, 2026
Deadline for September Monthly Depositor tax liabilities 
November 2026
Nov 4, 6, 11, 13, 18, 20, 25 & 27
Semi-Weekly Federal Tax Deposit Due
Sat-Tue wages → Friday deposit; Wed-Fri wages → Wednesday deposit
Monday, Nov 2, 2026
1. File Form 941 for Q3 2026
2. File state quarterly wage reports (Verify state-specific deadlines)

Monday, Nov 16, 2026
Deadline for October Monthly Depositor tax liabilities 
(Nov 15 is a Sunday)
Monday,
Nov 30, 2026
Year-End Preparation:
1. Order W-2 and 1099 forms for year-end
2. Review subcontractor W-9s and update as needed
December 2026
Dec 2, 4, 9, 11, 16, 18, 23, 28 & 30
Semi-Weekly Federal Tax Deposit Due
Sat-Tue wages → Friday deposit; Wed-Fri wages → Wednesday deposit
Tuesday,
Dec 15, 2026

1. Final payroll of the year - verify all hours and classifications
2. Ensure all certified payroll reports are submitted for prevailing wage work
Certified payroll reports are due WEEKLY for prevailing wage projects.
3. Complete year-end workers' compensation audit paperwork
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