N.J. Stat. § 2A:23D-14: Waiver of privilege.

14. a. A privilege under section 13 of P.L.2014, c.50 (C.2A:23D-13) may be waived in a record or orally during a proceeding if it is expressly waived by both parties and, in the case of the privilege of a nonparty participant, it is also expressly waived by the nonparty participant.

b. A person who discloses or makes a representation about a family collaborative law communication that prejudices another person in a proceeding is precluded from asserting a privilege under section 13 of P.L.2014, c.50 (C.2A:23D-13), but this preclusion applies only to the extent necessary for the person prejudiced to respond to the disclosure or representation.

L.2014, c.50, s.14.