California Code, Code of Civil Procedure - CCP § 706.022

(a) As used in this section, “withholding period” means the period which commences on the 10th day after service of an earnings withholding order upon the employer and which continues until the earliest of the following dates:

(b) Except as otherwise provided by statute, an employer shall withhold the amounts required by an earnings withholding order from all earnings of the employee payable for any pay period of the employee which ends during the withholding period.

(c) An employer is not liable for any amounts withheld and paid over to the levying officer pursuant to an earnings withholding order prior to service upon the employer pursuant to paragraph (2) or (3) of subdivision (a).