In addition to all other matters, the board shall by its rules provide for the following:
(a) Order of Suspension and Restoration. The civil service rules shall provide the manner and order, not inconsistent with the provisions of this section, in which all persons employed in the classified civil service shall be suspended and restored where the suspension results from lack of work, lack of funds or abolishment of position or otherwise, excepting suspension for personal delinquency. In all cases, suspension and restoration shall be based upon seniority as provided in this section, or as provided by the civil service rules.
No assignment of employees to positions within a class, except as provided in this section, for which no different examination requirements have been established by the board shall affect the requirements of this section governing suspension and restoration for lack of work, lack of funds or abolishment of position or otherwise. In all of these cases, all employees within the same Class-Group, as defined below, and for which similar examinations are required by the board shall be considered as one Class-Group for purposes of suspension and restoration.
Whenever suspension other than for personal delinquency is to be made in any class in an office, department, bureau or major division in a department having control of its own funds (Class-Group), the person to be suspended shall be selected in the order determined by length of service in such class and in classes of higher rank since regular appointment in the classified civil service, after deducting periods of absence in accordance with the civil service rules. Persons having the shortest length of service shall be suspended first.
(b) Displacement. Any person so suspended shall be entitled to displace the person holding a position in a Class-Group in which a regular position was formerly held by the person so suspended, who has the shortest length of service in such Class-Group and in classes of higher rank after deducting periods of absence as provided by the civil service rules. Any person entitled to displace a person may fill instead, with the consent of the appointing authority, a vacant position in the Class-Group in which he or she is entitled to displace. In the event an employee exercises his or her right to displacement, the employee shall receive the salary at the level of the highest paygrade in the Class-Group which the employee held prior to leaving the Class-Group.
(c) Determination of Class-Groups. The Class-Group in which suspension is to be made or the Class-Group in which restoration is to be made, shall include all positions created from such Class-Group after the original regular appointment therein of the person suspended or restored. The determination of the board as to the Class-Group from which such positions were subsequently created shall be final and conclusive.
(d) Reserve List. A reserve list shall be established in each class in each office, department, bureau or division of a department having control of its own funds which shall consist of the names of those persons who have been regularly appointed or promoted to, and have served beyond the probationary period in a class and have been suspended for causes other than personal delinquency. Each person whose name appears on the reserve list, until regularly restored to a position in the class in the office, department, bureau or division from which he or she was suspended shall be certified for appointment to a position in the class in the office, department, bureau or division from which he or she was suspended. The name of any person who has been out of the service of the City for more than five years shall be permanently removed from the reserve list.
(e) Order of Certification. Whenever any vacancy is to be filled, it shall be filled by certifying in the following order:
(1) from the reserve list, if any, in the class and office, department, bureau or major division in which the vacancy exists, the name of the person with greatest length of service in the class and all classes of higher rank, or by transfer of a person whose service in the class and classes of higher rank is greater than that of any person on the reserve list.
(2) from the promotional list, if any, provided for in Section 1009, of the office, department, bureau or major division where the vacancy is to be filled;
(3) from the reserve list of other offices, departments, bureaus and major divisions as provided in the civil service rules;
(4) by certifying from the appropriate register of eligibles provided in this Article.
As to certifications to be made from other than the reserve list of the office, department, bureau or major division in which the vacancy exists, the board may by its rules provide that when the list or register from which certification is to be made does not contain as many names as may be certified for any vacancy or vacancies under the provisions of Section 1010, additional names, up to but not exceeding the maximum number allowed, shall be certified from the list or register next in the order as provided above.
(f) Procedural Review. The board shall have the same power and duty to review as to regularity of procedure all cases of suspension for lack of work, lack of funds or abolishment of position or otherwise, as elsewhere provided in the Charter for removal, discharge, or suspension for cause; but the question of the necessity for suspension for lack of work, lack of funds or abolishment of position shall not be subject to review by the board.