California Code, Unemployment Insurance Code - UIC § 1094

(a) Except as otherwise specifically provided in this code, the information obtained in the administration of this code is confidential, not open to the public, and shall be for the exclusive use and information of the director in discharge of his or her duties.

(b) The information released to authorized entities pursuant to other provisions of the code shall not be admissible in evidence in any action or special proceeding, other than one arising out of the provisions of this code or one described in Section 1095.

(c) The information may be tabulated and published in statistical form for use by federal, state, and local governmental departments and agencies, and the public, except that the name of the employing unit or of any worker shall never be divulged in the course of the tabulation or publication.

(d) Wages as defined by Section 13009 and amounts required to be deducted and withheld under Section 13020 shall not be disclosed except as provided in Article 2 (commencing with Section 19542) of Chapter 7 of Part 10.2 of Division 2 of the Revenue and Taxation Code.

(e) Any employee or his or her representative may receive his or her wage information upon written request by the employee.  The information shall be provided without charge.

(f) Any person who knowingly accesses, uses, or discloses any confidential information without authorization is in violation of this section and is guilty of a misdemeanor.