CA Civ Proc Code Section 708.720

(a)

If a public entity owes money to the judgment debtor, the obligation of the public entity may be applied to the satisfaction of the money judgment against the judgment debtor only in the manner provided by (1) this article, (2) Chapter 5 (commencing with Section 706.010) (wage garnishment), or (3) Article 5 (commencing with Section 708.410) (lien in pending action or proceeding).

(b)

The earnings of a public officer or employee shall not be withheld pursuant to this article. Except as expressly provided by law, the earnings of a public officer or employee may be withheld for the payment of a money judgment only pursuant to Chapter 5 (commencing with Section 706.010).

(c)

If the obligation of a public entity to pay money to the judgment debtor is the subject of a pending action or special proceeding, the procedure in this article does not apply. The payment of the obligation that is the subject of the pending action or special proceeding may be applied to the satisfaction of the money judgment against the judgment debtor only in the manner provided in Article 5 (commencing with Section 708.410).