5 CFR §610.407

1. (a)An employee on a compressed schedule who performs work on a holiday is entitled to basic pay, plus premium pay at a rate equal to basic pay, for the work that is not in excess of the employee's compressed work schedule for that day. For hours worked on a holiday in excess of the compressed work schedule, a full-time employee is entitled to overtime pay under applicable provisions of law and a part-time employee is entitled to straight time pay or overtime pay, depending on whether the excess hours are nonovertime hours or overtime hours.
2. (b)An employee on a compressed work schedule is not entitled to holiday premium pay while engaged in training, except as provided in § 410.402 of this chapter.