DOL Clarifies Coverage for TAB work under the Davis Bacon and Related Acts

Workers who perform TAB work on HVAC systems are generally considered "laborers or mechanics" under the Davis-Bacon Act (DBA) because TAB work involves manual or physical duties.

DOL’s Wage and Hour division recently issued guidance to federal agencies providing that most testing and balance work is covered under the Davis Bacon and Related Acts.  Workers who perform TAB work on HVAC systems are generally considered "laborers or mechanics" under the Davis-Bacon Act (DBA) because TAB work involves manual or physical duties.  TAB work is considered part of construction, alteration, or repair on a DBRA-covered project when it is performed in conjunction with such activities. ​ For example, if TAB work precedes the acceptance of a completed building or work, it falls under Davis-Bacon coverage. 

Contracts for testing HVAC system functionality that are necessary for a federal repair or rehabilitation project are also subject to Davis-Bacon labor standards, even if the testing work is in a separate contract but closely related to the main project. ​ However, TAB testing work may not be covered under Davis-Bacon if it is performed in segregable phases distinct from construction activities.  For more information, view the all-agency memorandum linked here


Aug 6, 2024 Member Update

Latest Articles


SMACNA Marketing & Communications Department Recognized at Ragan PR Awards

Oct 8, 2025 - New York Awards Ceremony sees SMACNA gain honorable mentions for its website redesign, Project Spotlight and SMACNews.


September Federal Updates

Oct 8, 2025 - Learn more about some of the critical policy matters coming out of the federal government, including the U.S-Japan Agreement, tariffs before the Supreme Court, the upcoming DOL Regulatory Agenda and more!


Unlocking Future Talent: A Guide to Building a Strong Internship Program

Oct 8, 2025 - Looking to attract talent, reduce hiring costs, and prepare future leaders from within? Building a Strong Internship Program: Best Practices for Contractors is a guide for developing internships that create value and support long-term goals.