California Code, Code of Civil Procedure - CCP § 706.122

(a) The named employer has been ordered to withhold from the earnings of the judgment debtor the amounts required to be withheld under Section 706.050, or such other amounts as are specified in the earnings withholding order, and to pay these amounts over to the levying officer for transmittal to the person specified in the order in payment of the judgment described in the order.

(b) The manner of computing the amounts required to be withheld pursuant to Section 706.050.

(c) The judgment debtor may be able to keep more or all of the judgment debtor's earnings if the judgment debtor proves that the additional earnings are necessary for the support of the judgment debtor or the judgment debtor's family supported in whole or in part by the judgment debtor.

(d) If the judgment debtor wishes a court hearing to prove that amounts should not be withheld from the judgment debtor's earnings because they are necessary for the support of the judgment debtor or the judgment debtor's family supported in whole or in part by the judgment debtor, the judgment debtor shall file with the levying officer an original and one copy of the “judgment debtor's claim of exemption” and an original and one copy of the “judgment debtor's financial statement.”