(a) Each contractor and subcontractor subject to this subtitle shall pay each employee not less than the prevailing wage rate required under this subtitle:
(1) unconditionally;
(2) without subsequent rebate; and
(3) except as provided in subsection (b) of this section, without deductions for:
(i) food;
(ii) sleeping accommodations;
(iii) transportation;
(iv) use of small tools; or
(v) any other thing of any kind.
(b) A contractor or subcontractor may make deductions that are:
(1) required by law;
(2) required or allowed by a collective bargaining agreement between a bona fide labor organization and the contractor or subcontractor; or
(3) contained in a written agreement between an employee and an employer undertaken at the beginning of employment, if the agreement:
(i) concerns food, sleeping accommodations, or other similar items;
(ii) is submitted by the employer to the public body awarding the public work contract; and
(iii) is approved by the public body as fair and reasonable.