OverviewMulti-tiered dispute resolution clauses (often described as escalation clauses, waterfall provisions, or ‘ADR-first’ mechanisms) are a defining feature of modern commercial contracts, particularly in the construction, infrastructure, and energy sectors. These clauses require parties to follow a sequence of agreed dispute resolution steps before commencing arbitration or litigation.Typical stages include:•referral to an engineer, contract administrator, or expert;•senior management negotiations;•mediation or conciliation; and/or•other structured pre-arbitral procedures.The use of these clauses offers advantages, but also present practical challenges. They may allow parties to a dispute on the threshold of arbitration a structured and safe period of time within which to attempt to resolve their disputes, potentially forestalling expensive arbitration proceedings. Failing complete resolution of the disputes, the use of such clauses may narrow the issues between the parties; informative of potential time and cost savings. The potential drawbacks include a delay in the commencement