Two construction supervisors in hard hats discussing site plans on a building construction site with scaffolding.

How AASHTO XML Certified Payroll Works for DOT Projects

June 17, 2026

Contractors working on state Department of Transportation (DOT) projects are often required to submit certified payroll reports in AASHTO XML format. This requirement applies to projects managed through AASHTOWare Project Civil Rights & Labor systems, which most state DOTs use to track prevailing wage compliance on federally funded transportation work.

What Is AASHTO XML Certified Payroll?

AASHTO stands for the American Association of State Highway and Transportation Officials. AASHTOWare is the software suite developed and licensed through AASHTO that state DOT agencies use to manage transportation projects, including the Civil Rights & Labor module that handles certified payroll compliance.

When a contractor works on a federally funded transportation project, the state DOT typically requires weekly certified payroll submissions in AASHTO XML format. Unlike a standard WH-347 Form or paper submission, an XML file is a structured data file that the AASHTOWare system can read, validate, and process automatically.

The XML format allows DOT agencies to verify prevailing wage compliance across thousands of payroll records without manual data entry. For contractors, it means every weekly submission must conform to a specific technical structure or risk rejection.

What Information Is Included in an AASHTO XML File

An AASHTO XML certified payroll file contains all the same information found on a traditional WH-347, organized in a machine-readable format. This includes contractor and payroll header details, payroll start and end dates, employee identification and classification data, hours worked and wage rates, and fringe benefit program information.

The XML structure follows specifications defined in AASHTO's technical resource kits. Each data element must appear in the correct order, with the correct formatting, or the file will fail validation when uploaded to the AASHTOWare system.

Why DOT Agencies Require XML Submissions

State DOT agencies process a high volume of certified payroll reports across active projects. Manual review of paper or PDF submissions would be impractical given the number of contractors, subcontractors, and weekly reports involved.

AASHTO XML submissions allow the AASHTOWare Project Civil Rights & Labor system to import payroll data automatically and cross-check it against project wage determinations. The system can flag underpayments, classification errors, missing fringe benefits, and other compliance issues without a compliance officer or auditor manually reviewing every line of every report.

For contractors, the XML format also creates a cleaner audit trail. Every submission is timestamped, validated, and stored in a centralized system, which reduces ambiguity if a compliance question comes up later in the project.

Common Challenges With AASHTO XML Certified Payroll

Most contractors generate AASHTO XML files manually, which creates several recurring problems.

XML coding is technical work. Payroll staff who are familiar with wage determinations and certified payroll requirements are not typically trained in XML formatting standards. Creating a compliant file from scratch requires either learning the technical specifications or relying on IT support, both of which slow down weekly submissions.

Formatting errors are the leading cause of file rejection. A missing tag, an incorrect data element, or a structural issue in the XML can cause the entire submission to fail validation. The DOT agency may return the file for corrections, hold project payments pending resubmission, or flag the contractor for additional compliance review.

Multi-state work multiplies the problem. Contractors operating across several states deal with different AASHTOWare configurations, different state-specific data elements, and different submission timelines. Managing this manually across multiple projects ties up payroll staff and increases the risk of errors.

How Automated AASHTO XML Generation Works

Certified payroll software designed for DOT projects eliminates the manual XML coding step entirely. The contractor enters or imports payroll data the same way they would for any certified payroll report. The software then converts that approved data into a properly formatted AASHTO XML file, ready for direct upload to the AASHTOWare system.

This process removes the technical barrier that typically requires payroll staff to learn XML standards or coordinate with IT. It also significantly reduces the formatting errors that cause file rejections, since the XML is generated by the system rather than coded by hand.

For contractors managing multiple state DOT projects, automated XML generation handles state-specific variations in the background. The same payroll data can be exported in the correct format for each state's AASHTOWare configuration without separate processes or duplicated work.

Davis-Bacon Compliance on Transportation Projects

The Davis-Bacon Act applies to all federally funded transportation projects, which means contractors must pay prevailing wages and fringe benefits established by the U.S. Department of Labor for each job classification. Certified payroll documentation is how contractors prove ongoing compliance with these requirements.

On AASHTO projects, certified payroll must document all employee hours and classifications for each week, show that wages paid meet prevailing wage requirements, include fringe benefit amounts, be submitted within required timeframes, and remain available for audit by government agencies.

Missing or delayed submissions can trigger compliance investigations and project payment holds. Inaccurate submissions, especially those rejected due to XML formatting errors, create additional audit risk and can delay project milestones.

Simplifying AASHTO XML Submissions With eMars

eMars generates AASHTO XML certified payroll files automatically from approved payroll data, formatted for direct upload to AASHTOWare Project Civil Rights & Labor systems. Payroll teams enter data the same way they do for any certified payroll, and the system handles the technical conversion in the background.

The platform supports AASHTO XML auto-fill across multiple state DOT agencies, with state-specific configuration built into each project. This eliminates the formatting errors that cause file rejections and removes the technical learning curve for payroll staff. Over 50,000 users trust eMars for certified payroll compliance on Davis-Bacon and prevailing wage projects.

Working on a DOT project that requires AASHTO XML submissions? Contact eMars today to schedule a demo and see how automated XML generation fits into your certified payroll workflow.

Link copied to clipboard!