Sec. 13. (a) This section applies to a public works contract awarded after June 30, 2016. The payroll and related records of a contractor in any contractor tier must be:
(1) preserved by the contractor for a period of three (3) years after completion of the project work; and
(2) open to inspection by the department of workforce development.
(b) The department of workforce development shall maintain the confidentiality of all records inspected under this section in accordance with the confidentiality provisions of IC 22-4-19-6.