CA Gov't Code Section 19991.8

During any state military emergency and subject to department rule, an appointing power may grant a leave of absence without pay to a permanent or probationary employee under his or her jurisdiction to:

(a)

Engage in civilian warwork pursuant to mandatory order of the agency of the United States or of the state having authority to make that order.

(b)

Assume active duty in the United States merchant marine.

(c)

Assume other duty rather than active duty to fulfill a military obligation pursuant to mandatory order of the agency of the United States or of the state having authority to make such order.

(d)

Assume active full-time duty for the American Red Cross. Such a leave shall not exceed the period authorized in the order. Such a leave assures to the employee reinstatement pursuant to Section 19143.