Procedural issues are an area of increasing complexity and concern in modern investment arbitration, and one in which very little guidance currently exists. There are a number of important points of departure from the procedural rules commonly adopted in the context of international-commercial arbitration. This book is the first of its kind to address this gap, examining the most prevalent and controversial procedural issues that arise in investment arbitration proceedings conducted under the International Centre for Settlement of Investment Disputes (ICSID), UNCITRAL, and other arbitral rules. The book takes the reader through an investment arbitration in chronological order, identifying each key procedural issue in turn and providing details of the relevant precedents. It charts the process of an arbitration from applicable law and first sessions right through to cost submissions and statements of costs and post-award remedies. Fully cross-referenced and tabled, the book is an invaluable and practical guide to issues of increasing importance and relevance in ICSID and other arbitrations today.