Whether a contractor, an owner, a design professional, a construction manager, or a contractor, all construction professionals must learn how to prepare, analyze, and justify time extension requests. Owners and their representatives are tasked with the responsibility of receiving, analyzing and recommending a course of action and deciding on all time extension requests submitted by contractors. Contractors and CM’s@Risk are required to analyze, prepare, justify and submit time extension requests on their own behalf and/or on behalf of their subcontractors. This presentation identifies the tests that have been set forth by the U.S. Federal Courts to justify both excusable and compensable delay time extension requests. The presentation discusses how these rules are applied, whether submitting or analyzing a time extension request. The presentation also discusses the rules concerning concurrent delay and how the courts hold the claimant responsible for allocating concurrent delay. Finally, the presentation highlights two new court rulings which may be “game changers” concerning delays, time extension requests and the use of concurrent delay as a defense against liquidated damages.