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John May
John May Barrister & Complex Litigation Advisor | Calgary

About John

John practises corporate/commercial litigation and arbitration in a variety of industries, advising clients on disputes relating to large-scale construction projects, contractual disputes, insurance law, oil and gas law, and tax controversy matters, among others.

Select Experience

Recent representative matters include advising:

  • A multinational energy company on a $20-million arbitrated dispute involving the construction and maintenance of pipelines

  • A major South American mining concern in a commercial arbitration involving a dispute over property damage to equipment

  • A Crown corporation in a $270-million arbitrated dispute relating to delays, change orders and breach of contract during the construction of a power transmission project

  • Insurers in a $540-million coverage dispute for business interruption and repair costs involving the refurbishment of a nuclear power facility

  • A global EPC contractor on a $70-million multi-party arbitration surrounding the construction of a sour gas facility

  • Energy infrastructure companies on matters relating to land acquisition and the construction of power transmission and pipeline projects including land owner disputes

  • Clients in insurance coverage disputes involving faulty design and workmanship exclusions as well as liability coverage

  • A leading global EPC firm on an appeal from a construction arbitration decision relating to the supply of modules

  • Registered charities on a range of organization issues and disputes with the CRA

Awards & Recognition
  • The Best Lawyers in Canada 2024 (Corporate and Commercial Litigation)

Professional Activities

John is a member of several professional organizations, including the Canadian Tax Foundation and the Canadian Petroleum Tax Society.


Admitted to the Alberta Bar – 2011
LLB, University of British Columbia – 2010
BA (English Literature and Philosophy), University of British Columbia – 2007

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