Clause 2.6 of the Standard Law Institute of Victoria Mediation Agreement provides that the parties agree that they will not at any time before, during or after a mediation, call the mediator as witness in any legal or administrative proceedings concerning the dispute.
"A mediator’s nightmare: giving evidence in court about what happened at a mediation,"
ADR Bulletin: Vol. 5
, Article 2.
Available at: http://epublications.bond.edu.au/adr/vol5/iss9/2