1100 Peachtree Street NE Suite 2800, Atlanta, GA USA 30309
Hayley Ambler is a construction litigation partner, focusing on energy, chemical and petrochemical production, and other heavy industrial projects. She regularly represents EPC contractors, heavy industrial contractors, original equipment manufacturers, and owners in connection with a variety of domestic and international disputes involving LNG facilities, nuclear, combined cycle and coal-fired power plants, hydrogen plants, ethylene glycol plants, natural gas pipelines, heat recovery steam generators (HRSG), wastewater treatment plants, environmental remediation and closure projects, missile defense bases, large multi-family housing, and mixed use projects. Ms. Ambler has been instrumental in achieving many successful results for clients, including obtaining $42 million, $26.3 million, and $13 million arbitration awards, along with interest and prevailing party attorneys’ fees, for one of the largest heavy industrial contractors in the United States. Ms. Ambler has extensive experience with arbitrations before the American Arbitration Association, International Chamber of Commerce, International Centre for Dispute Resolution, International Institute for Conflict Prevention and Resolution, mediations, and state and federal court trials.
Ms. Ambler's practice also involves front-end claims avoidance, including effective contract drafting and negotiation, contract management and administration, project documentation, and project execution. She has served as project counsel for a major oil and gas exploration and production services company during its construction of an offshore production and storage unit. As project counsel, Ms. Ambler was the prime contact for the project team regarding compliance with the contract, disputes, and claims resolution. A primary part of Ms. Ambler’s role was to facilitate the claims resolution process, including the development of a secure client web portal where questions about claims could be posed from the project team for early intervention by counsel.
Ms. Ambler’s previous experience includes serving as a judicial clerk to the Honorable W. Eugene Davis of the United States Court of Appeals for the Fifth Circuit. She was recognized in 2025 and the six years immediately preceding by The Best Lawyers in America® for Construction Litigation. She is a member of the Construction Lawyers Society of America. Ms. Ambler was recommended in 2022 and 2024 by Legal 500 US for Construction.
Experience
Represented one of the largest heavy industrial contractors in the United States in a three-week arbitration involving the construction of a mono-ethylene glycol plant (module and conventional construction) in Texas. Our client was plagued with design delays and changes, delays in equipment delivery, and disruptions by the EPC Contractor, an international joint venture. Our client recovered over $40 million in the ICDR arbitration, with interest and attorneys’ fees. All counterclaims by the EPC Contractor were rejected by the Panel.
Represented a prominent heavy industrial contractor in a four-week arbitration arising from the construction of a heat recovery steam generator in the Southeast. The disputes involved scope changes, delays and disruptions, and lost productivity. After successfully defeating multiple state and federal court actions to delay the arbitration, we ultimately prevailed in the ICDR arbitration. The Panel awarded our client $26.3 million, 100% of its damages, interest, and attorneys’ fees. The Panel rejected the counterclaims of the Owner in their entirety.
Represented an international oil, gas, and chemical EPC contractor in a dispute over delays to its construction of an LNG facility in the Northeast. We were able to resolve the dispute through a year-long mediation and binding dispute resolution process, successfully converting a lump sum contract to fully cost-reimbursable.
Represented an EPC contractor, which was a limited partnership comprised of three international design and construction firms, in litigation in Kansas state court concerning the design and construction of a coal-fired boiler for a new power plant in Texas. Millions of dollars in claims against the designer/manufacturer of the coal-fired boiler were successfully resolved by designer/manufacturer’s payment of a mid-eight-figure amount.
Represented a significant heavy industrial contractor in a four-week ICDR arbitration arising out of the construction of a hydrogen plant in Texas for an international producer of industrial and medical gases. Our client suffered millions of dollars in damages due to scope changes, delays, and disruptions caused by the owner, combined with repeated acceleration directives. Because of the multitude of changes, over 1,000 Requests for Information were issued on this project, as well as almost 800 Requests for Change Orders, totaling 40% of the contract value. The Panel awarded our client more than 90% of its claimed damages, interest, and attorneys’ fees.
Represented an EPC Contractor involving disputes surrounding the design and construction of four new U.S. nuclear units at two sites. Claims on the projects totaled over $4 billion and involved substantial federal court litigation. The claims were favorably resolved.
Defended a large general contractor sued by the Owner for fraud, conspiracy, and defective construction of a large project in North Carolina. After the Owner filed its lawsuit in state court, we were successful in compelling arbitration of the Owner’s $80 million claim. We conducted a four-week AAA arbitration, defeated all of the Owner’s claims, and were awarded our attorneys’ fees.
Represented a multi-national contractor in an ICC multi-week arbitration involving the design and construction of a large missile defense system in Poland. The ICC arbitration was conducted in Frankfurt, Germany.
Represented a large heavy industrial contractor against EPC contractor on the Salem Harbor Energy Center 674 MW Natural Gas Combined Cycle Facility in an ICDR arbitration.
Represented a heavy industrial contractor against an owner on a Tetrafluoropropene production plant in a AAA arbitration, resulting in 100% recovery of claimed amount.
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Louisiana State University School of Law J.D. (1998) summa cum laude, Order of the Coif
Louisiana State University B.S. (1995) summa cum laude
Georgia (2000)
Louisiana (1998)
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