No process.
Per the DOT, UPS can follow either, and it is just up to UPS which rule to assign drivers to.
FMCSA guidance questions and answers to the HOS rules.
Question 1: May a motor carrier switch from a 60-hour/7-day limit to a 70-hour/8-day limit or vice versa?
Guidance:
Yes. The only restriction regarding the use of the 70-hour/8-day rule is that the motor carrier must have Commercial Motor Vehicle CMVs operating every day of the week. The 70-hour/8-day rule is a permissive provision in that a motor carrier with vehicles operating every day of the week is not required to use the 70-hour/8-day rules for calculating its drivers’ hours of service. The motor carrier may, however, assign some or all of its drivers to operate under the 70-hour/8-day rule if it so chooses. The assignment of individual drivers to the 60-hour/7-day or the 70-hour/8-day time rule is left to the discretion of the motor carrier.
Question 3: May a carrier which provides occasional, but not regular service on every day of the week, have the option of the 60 hours in 7 days or 70 hours in 8 days with respect to all drivers, during the period in which it operates one or more vehicles on each day of the week?
Guidance:
Yes.
Question 6: If a motor carrier operates under the 70-hour/8-day rule, does any aspect of the 60-hour rule apply to its operations? If a motor carrier operates under the60-hour/7-day rule, does any part of the 70-hour rule apply to its operations?
Guidance:
If a motor carrier operates 7 days per week and chooses to require all of its drivers to comply with the 70-hour/8-day rule, the 60-hour/7-day rule would not be applicable to these drivers. If this carrier chooses to assign some or all of its drivers to the 60-hour/7-day rule, the 70-hour rule would not be applicable to these drivers. Conversely, if a motor carrier does not operate 7 days per week, it must operate under the 60-hour/7-day rule and the 70-hour rule would not apply to its operations.