Cal. Gov. Code § 31592.6
In order for a recognized retiree organization to fulfill its obligations to the retired members of the system and to communicate with them, upon the organization's request the board shall cooperate with and assist the organization in distributing communications regarding membership in and retiree benefit programs available through the organization to all or a portion of those retired members. The content of those communications shall be wholly the responsibility of the recognized retiree organization, and the board shall not have any liability for the content of those communications. Cooperation and assistance in distribution may consist of combined or separate mailings. The board may charge a reasonable fee for those mailings, which may not exceed the actual costs to the system, including staff time for preparation of the mailings.
Ca. Gov. Code § 31592.6