The International Federation of Consulting Engineers (FIDIC) has published Practice Note III Decisions: Preparation and Composition to provide best practice guidance to adjudicators in carrying out their decision-writing function under FIDIC forms of contract. Launched on 3 December 2025 during the Official FIDIC International Contract Users' Conference in London, the practice note establishes standards of good practice expected of dispute board members and details best practice tasks and techniques for producing dispute board decisions. The guidance covers managing the referral process, review of referrals, establishing timetables, response reviews, jurisdictional challenges, managing additional exchanges, assessment of evidence, hearings, deliberation among dispute board members, structuring decision documents, compliance with FIDIC contract provisions and formalities, and post-decision considerations. While written primarily for dispute adjudication and avoidance boards, the general principles may apply to all types of dispute board decisions under other FIDIC forms and the document is expected to be widely used across the international construction industry.