The Oxford Dictionary defines ‘ethics’ as ‘moral principles that govern a person’s behaviour or the conducting of an activity’. In mediation, moral principles are especially salient, given that the attraction of mediation to disputants is often described as the result of party autonomy in two key respects – the right of disputants to determine procedural fairness in the mediation process and the right of disputants to determine substantive fairness in the outcome. This session will explore the issues of ethics and professional issues on mediation and mediation representation. We will thoroughly consider the role of mediators and lawyers who represent clients at mediation, and discuss situations when the discharge of the mediators’ duties or the lawyers’ duties at mediation gives rise to ethical or professional issues.