(a) All work in excess of the regularly scheduled eight (8) hour work day shall be overtime and compensated at a rate of time and one-half the regular rate or as otherwise provided. Overtime shall not be paid twice for the same hours.
(b) If an employee is requested to report back to work not contiguous to the beginning or end of the regular shift, the employee shall be guaranteed a minimum of four (4) hours overtime pay.
(c) If the employee is requested to report to work two (2) hours or less prior to but contiguous to the start of the shift, the employee shall be paid for actual time worked at the appropriate overtime rate.
(d) If the employee is requested to report to work more than two (2) but less than four (4) hours prior to but contiguous to the start of the shift, the employee shall be guaranteed four (4) hours overtime pay.
All such hours shall be paid at the appropriate overtime rate.