Provisions of the rule finalized last year can extend prevailing wage requirements to truck drivers and material supplier employees in some cases.

A state law prohibits Arizona cities from enacting prevailing wage requirements, a judge ruled.

Incentives tied to craft worker compensation and apprenticeship on clean energy projects won't require developers to have project labor agreements, says the U.S. Treasury Dept.

Construction unions hailed the new rule, but some contractor groups have strongly criticized it, with the Associated Builders and Contractors already planning a legal challenge.

Officials accuse Bridgeview, Ill.-based Drive Construction of setting up two layers of shell companies and paying workers in cash to avoid traceability.

Arguments about prevailing wages have not changed much since the 1980s, the last time the U.S. government changed methods under the 1931 Davis-Bacon Act to determine a prevailing wage on most construction projects with federal funding.

The state recovered more than $44,000 from Minnesota Controls Solutions, which was cited for underpaying and incorrectly classifying its employees.

Proposed changes would be the first major revisions to the law in about 40 years.