California Code, Government Code - GOV § 19998.3

Notwithstanding any other provision of law to the contrary, an employee whose continuity of employment in the state service as either an exempt or civil service employee is broken for six months or longer by a permanent separation such as resignation, dismissal, or rejection during a probationary period, and who is subsequently reemployed after December 31, 1949, shall not be credited for service prior to that separation for purposes of sick leave, nor shall the employee be credited with any sick leave which the employee had accumulated prior to his or her separation and he or she shall again serve the months required to qualify for vacation credit. The department shall adopt rules governing the crediting of service before and after a break in service for purposes of vacation as specified in Section 19858.1 and the keeping of service records related thereto.

When an employee has a break in the continuity of his or her state employment because of a temporary separation such as layoff, suspension, leave of absence, military leave, disability retirement, or medical termination, his or her prior service shall be counted upon his or her return to state service for purposes of layoff, sick leave, and vacation.

If an employee had a break in the continuity of his or her state employment because of absence occasioned by his or her evacuation and relocation pursuant to orders issued by the commanding officer of the Western Defense Command in March 1942, for the evacuation of persons of Japanese descent from the area, where that employee was in state service on March 5, 1942, and returned to state service on or before December 31, 1949, the time of absence during which those orders were in effect shall be counted for purposes of layoff.