For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
   DEMOTION.  The demotion of an employee to a lesser position included within the same family of positions, occasioned by a reduction in force.
   EMPLOYEE.  Any full-time employee of the city.
   FAMILY OF POSITIONS.  A group of related positions which have been designated as such by resolution of the City Council, as recommended by the City Manager.  As a part of such designation, each position in each family shall be ranked for the purpose of establishing a line of lesser positions for the purpose of the demotion process, where such is ordered to effect a reduction in force.
   LENGTH OF SERVICE.  The total number of years of an employee's employment by the city, including the time spent in a probationary, provisional or leave status by any such employee.
   LESSER POSITION.  A position having a lesser ranking than one or more other positions in a family of positions.
   NOTICE.  Where notice is required pursuant to this subchapter, it shall be in written form, and given by personal service or by depositing the notice in the custody of the United States Postal Service, postage prepaid, addressed to the person to be notified at his last-known address.  The notice shall be deemed, for all purposes, to have been given as of the time of personal service, or, as of the time of its deposit in the custody of the United States Postal Service.
   POSITION.  A position of employment in the classified service, as defined in §§ 33.02 through 33.07.
('83 Code, § 2.56.120)