31642. The following shall not be considered as breaking the continuity of service:(a) A temporary layoff because of illness or for purposes of economy, suspension, or dismissal, followed by reinstatement or re-employment within one year.(b) A leave of absence followed by reinstatement or re-employment within one year after the termination of the leave of absence.(c) A resignation to enter, followed by entrance into, the armed forces of the United States, followed by re-employment by the county or district within six months after the termination of such service.(d) Resignation of a member who has elected in writing to come within the provisions of Article 9 followed by re-employment before withdrawal of any accumulated contributions.The withdrawal of accumulated contributions followed by the redeposit of the contributions upon re-entrance into service does not constitute a break in the continuity of service.(Amended by Stats. 1951, Ch. 596.)