The document provides an overview of extension of time claims, including definitions, triggers, contractual completion dates, key components, schedule integrity, documentation requirements, responsibility assignment, analysis techniques, and presentation best practices. An extension of time is a reimbursement of time granted to a contract party to compensate for delays outside their control. Triggers include delays impacting the critical path. Strong documentation and schedule integrity are essential, as is assigning responsibility according to the contract. Various analysis techniques can be used depending on the complexity, including as-planned vs as-built comparisons, windows analysis, and impacted as-planned schedules. Presentation should include documentation, graphical schedule representations, and a concise written explanation.