Evidentiary privileges: union agent-represented worker privilege.

Existing law governs the admissibility of evidence in court proceedings and generally provides a privilege as to communications made in the course of certain relations, including the attorney-client, physician-patient, and psychotherapist-patient relationship, as specified. Under existing law, the right of any person to claim those evidentiary privileges is waived with respect to a communication protected by the privilege if any holder of the privilege, without coercion, has disclosed a significant part of the communication or has consented to a disclosure made by anyone.