California Code, Code of Civil Procedure - CCP § 425.15

(a) No cause of action against a person serving without compensation as a director or officer of a nonprofit corporation described in this section, on account of any negligent act or omission by that person within the scope of that person's duties as a director acting in the capacity of a board member, or as an officer acting in the capacity of, and within the scope of the duties of, an officer, shall be included in a complaint or other pleading unless the court enters an order allowing the pleading that includes that claim to be filed after the court determines that the party seeking to file the pleading has established evidence that substantiates the claim. The court may allow the filing of a pleading that includes that claim following the filing of a verified petition therefor accompanied by the proposed pleading and supporting affidavits stating the facts upon which the liability is based. The court shall order service of the petition upon the party against whom the action is proposed to be filed and permit that party to submit opposing affidavits prior to making its determination. The filing of the petition, proposed pleading, and accompanying affidavits shall toll the running of any applicable statute of limitations until the final determination of the matter, which ruling, if favorable to the petitioning party, shall permit the proposed pleading to be filed.

(b) Nothing in this section shall affect the right of the plaintiff to discover evidence on the issue of damages.

(c) Nothing in this section shall be construed to affect any action against a nonprofit corporation for any negligent action or omission of a volunteer director or officer occurring within the scope of the person's duties.

(d) For the purposes of this section, “compensation” means remuneration whether by way of salary, fee, or other consideration for services rendered. However, the payment of per diem, mileage, or other reimbursement expenses to a director or officer shall not constitute compensation.