Utah Admin. Code 156-78B-4
This rule is intended to secure the just, speedy and economical determination of all issues presented to the Division.
Except as otherwise required by Title 78B, Chapter 3, the Division may permit a deviation from this rule when it finds compliance to be impractical or unnecessary.
The time within which any act shall be done, as herein provided, shall be computed by excluding the first day and including the last, unless the last day is Saturday, Sunday or a state holiday, and then it is excluded and the period runs until the end of the next day which is a scheduled workday for the Division. When the period of time prescribed or allowed is less than seven days, intermediate Saturdays, Sundays and legal holidays shall be excluded in the computation. Whenever a party has the right or is required to do some act within a prescribed period after the service of a notice or other paper upon the party and the notice or paper is served upon the party by mail, three days shall be added to the prescribed period.
Utah Admin. Code R156-78B-4