An Extension of Time claim is a request to extend the contractual completion date due to qualifying delay events. Understanding when you are entitled, what methodology to use, and how to substantiate your claim is essential.
Entitlement depends on the delay event category. Employer risk events (late information, variations, site access issues) typically entitle the contractor to both time and cost. Neutral events (weather, force majeure) may entitle time only. The contract specifies which events qualify.
Under FIDIC 2017, qualifying events include variations, Employer's risks, suspension, and unforeseeable physical conditions.
The five recognised methodologies are: Time Impact Analysis (TIA), Windows Analysis, As-Planned vs As-Built, Impacted As-Planned, and Collapsed As-Built. The choice depends on available records and complexity.
Each method has distinct advantages and limitations. TIA is considered the gold standard but requires high-quality programme records. Windows Analysis is preferred for complex multi-delay scenarios.
A successful EOT claim requires: contemporaneous programme records, evidence linking the delay event to critical path impact, a clear cause-and-effect narrative, and compliance with all contractual notice requirements.