As stated in Sec. 779.510, before the section 13(b)(11) exemption
may be claimed, the Secretary must find that the trip rate basis of
compensation, or other delivery payment plan used to compensate a driver
or a driver's helper making local deliveries, has the general purpose
and effect of reducing the hours worked by these employees to, or below,
the maximum workweek applicable to them under section 7(a) of the Act.
The conditions under which such findings may be made, amended, or
revoked, and the procedure for obtaining such a finding are set forth in
the regulations in part 551 of this chapter.
Records to be Kept by Employers