7 The Law Applicable to the Merits and the Award
Before describing the main features of an award, this chapter discusses the determination of the law governing the merits of the dispute or lex causae. It considers the role of party autonomy in this respect and examines the scope and content of the potentially applicable substantive laws that may be chosen by the parties or selected by arbitral tribunals, from national laws to transnational rules of law (the so-called lex mercatoria) over trade usages and ex aequo et bono principles. It also discusses the relevance and impact of international public policy and overriding or internationally mandatory rules. Turning to the award, the last part of the chapter sets out a typology of arbitral decisions, addresses the required form and content of awards and discusses the deliberation process as well as issues such as institutional scrutiny, dissenting opinions, and the notification, publication, and effects of the award.