No employee, including salaried employees, shall be paid in advance of completing work during each pay period. If a salaried employee does not complete his or her assigned number of hours during a pay period with either work and/or approved leave, he or she shall be paid a percentage of his or her regular bi-weekly salary, which percentage will be determined by dividing the total number of hours worked and/or leave approved for said pay period by the assigned number of hours for the same pay period.
('80 Code, § 2.02.120)