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Unveiling the Hidden Guarantees: Implied Warranties in EPC Contracts

In the realm of EPC (Engineering, Procurement, and Construction) contracts, implied warranties act as unwritten assurances that the contractor will deliver professional-grade work. These warranties supplement express warranties in the contract, offering an extra layer of protection for project owners.


Imagine hiring a contractor to build a house. Implicitly, you expect the work to be high-quality and suitable for living, meeting industry standards. This is the essence of implied warranties, which guarantee:

  • Quality of Work: The project will be built with reasonable skill and care, adhering to industry benchmarks.
  • Fitness for Purpose: The completed project will function as intended, fulfilling the agreed-upon purpose.
  • Compliance with Specifications: Construction, materials, and engineering practices will align with project specifications.

While implied warranties provide a safety net, express warranties in EPC contracts reign supreme. These are explicitly stated guarantees negotiated and documented, outlining the contractor’s commitments regarding:

  • Quality
  • Timeline
  • Performance

  • Explicit vs. Implicit: Express warranties are written in the contract, while implied warranties are inferred by law.
  • Scope and Enforcement: Implied warranties fill the gaps left by express warranties, ensuring a minimum quality standard. However, enforcing them can be trickier due to their dependence on legal interpretations.

To minimize reliance on implicit guarantees, EPC contracts should clearly define:

  • Scope of Work
  • Performance Expectations
  • Warranty Remedies

This ensures a shared understanding of quality, functionality, and performance, reducing disputes.


Implied warranties offer basic protection, but express warranties provide a more enforceable framework. A well-crafted EPC contract incorporates both to balance the interests of both parties. By clearly defining expectations and remedies, both owner and contractor can approach the project with confidence and clarity.

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