(f)
A prevailing rate employee is entitled to pay at his scheduled rate plus a night differential—
(1)
amounting to 71/2 percent of that scheduled rate for regularly scheduled nonovertime work a majority of the hours of which occur between 3 p.m. and midnight; and
(2)
amounting to 10 percent of that scheduled rate for regularly scheduled nonovertime work a majority of the hours of which occur between 11 p.m. and 8 a.m.
A night differential under this subsection is a part of basic pay.