(a) The employer shall maintain and preserve all the information and data required by § 516.2 and shall record daily as well as weekly overtime compensation for each employee employed:
(1) Pursuant to an agreement, made as a result of collective bargaining by representatives of employees certified as bona fide by the National Labor Relations Board, which provides that no employees shall be employed more than 1,040 hours during any period of 26 consecutive weeks as provided in section 7(b)(1) of the Act, or
(2) Pursuant to an agreement, made as a result of collective bargaining by representatives of employees certified as bona fide by the National Labor Relations Board, which provides that the employee shall be employed not more than 2,240 hours during a specified period of 52 consecutive weeks and shall be guaranteed employment as provided in section 7(b)(2) of the Act.
(b) The employer shall also keep copies of such collective bargaining agreement and such National Labor Relations Board certification as part of the records and shall keep a copy of each amendment or addition thereto.
(c) The employer shall also make and preserve a record, either separately or as a part of the payroll:
(1) Listing each employee employed pursuant to each such collective bargaining agreement and each amendment and addition thereto.
(2) Indicating the period or periods during which the employee has been or is employed pursuant to an agreement under section 7(b)(1) or 7(b)(2) of the Act, and
(3) Showing the total hours worked during any period of 26 consecutive weeks, if the employee is employed in accordance with section 7(b)(1) of the Act, or during the specified period of 52 consecutive weeks, if employed in accordance with section 7(b)(2) of the Act.