Cal. GOV § 7508.5

Except as otherwise provided in Section 20098 or 31528 of this code, or Section 22212.5 of the Education Code, an individual who was a member of the retirement board of a public pension or retirement system, as defined in subdivision (h) of Section 17 of Article XVI of the California Constitution, or an administrator, executive officer, investment officer, or general counsel of that board, shall not, for a period of two years after leaving that position, for compensation, act as agent or attorney for, or otherwise represent, any other person except the public entity maintaining that pension or retirement system, by making any formal or informal appearance before, or any oral or written communication to, the pension or retirement system, or any officer or employee thereof, if the appearance or communication is made for the purpose of influencing administrative or legislative action, or any action or proceeding involving the issuance, amendment, awarding, or revocation of a permit, license, grant, contract, or sale or purchase of goods or property.