Green extension of time (green EOT): a framework for environmental compliance delay under FIDIC construction contracts

Mandatory environmental compliance obligations increasingly affect construction programmes. Under FIDIC-based contracts, Extension of Time (EOT) mechanisms, including the Changes in Laws mechanism in Sub-Clause 13.6, are triggered by identifiable contractual or regulatory events. They leave ambiguous a narrow category of delay arising from intensified enforcement of an unchanged permit condition or statutory standard, and from generally applicable statutory duties triggered by factual circumstances without any new regulatory act, exposing contractors to sanctions for delays that may be unavoidable. Using a normative legal research methodology, this article advances the Green Extension of Time (Green EOT) as a compliance-based time entitlement operating alongside existing FIDIC mechanisms. It makes three contributions. First, it identifies a compliance-driven delay category not expressly captured by Sub-Clause 13.6. Second, it develops a Four-Limb Test (legal compulsion, unforeseeability at Base Date, critical path impact, and reasonable mitigation) as an operational eligibility standard. Third, it integrates this category into critical path method (CPM) delay analysis and dispute board practice, supported by a model Particular Condition and illustrated through representative examples rather than claims of systemic occurrence. The framework situates environmental compliance delay within construction management practice rather than purely doctrinal analysis.