(a) Appointment. The appointing authority shall fill any vacant position in the classified service by appointment of one of the persons certified to such appointing authority by the Commission.
(b) Probationary Period. All original and promotional appointees shall serve a probationary period of eighteen months in service or grade. If the service of the probationary appointee is unsatisfactory, such employee may be removed at any time during the probationary period without cause.
(1) Promotional appointees. When an appointment is made as a result of a promotional examination and such appointee is removed from the promotional position during the probationary period, such appointee shall be restored to service in the classification which was held immediately prior to such promotion, and without prejudice of any kind.
(2) Reconsideration of removal decision. An appointee who has been removed by the appointing authority during the probationary period may submit a written request to the Commission for reconsideration of such removal, and request a hearing. Such notice shall be made in writing within five days after notice to the appointee of removal or reduction. The Commission shall review the reasons for the decision of removal, and may sustain or deny the action of the appointing authority.
(c) Temporary Appointments. The appointing authority may make a temporary appointment to the classified service (original or promotional), provided however, that such appointment shall remain in force for a period not exceeding thirty days, and only until a regular appointment can be made under the provisions of this chapter.
(d) Restoration of Probationer to the Eligible Candidate List. Should the position for which an appointee has been certified prove to be temporary, and such appointee be laid off without fault or delinquency before the time of probation has been completed, such probationary appointee shall be restored to the earlier position held on the eligible candidate list.