Utah Code Ann. § 34-30-14
(1) For purposes of this section:
(2)
(a) Except as provided in Subsection (2)(b) or as required by federal or state law, the state or any political subdivision that contracts for the construction, maintenance, repair, or improvement of public works may not require that a contractor, subcontractor, or material supplier or carrier engaged in the construction, maintenance, repair, or improvement of public works pay its employees: