Michael Mason

Michael Mason


Mike returned to GT in 2018 and continues his global labor and employment practice. Clients from the technology and other industries turn to Mike for policy drafting, internal investigations, compliance advice, management training, representation before administrative agencies, and, when necessary, litigation.

Mike knows what inside counsel expect from their outside lawyers. For most of the past year, Mike has been imbedded with the legal department of a large international company providing global L&E support and leading internal investigations. Mike also spent six years in executive roles as Senior L&E Counsel and Director of Human Resources at Pinnacle West Capital Corporation and its subsidiary Arizona Public Service Company. In those roles, he oversaw litigation, selected and managed outside counsel, and oversaw part of the company’s compliance function. He also conducted internal investigations and audit responses, trained management, managed a team of HR professionals, served as lead negotiator in collective bargaining, led the diversity and inclusion program, and represented the company before federal administrative agencies including the NLRB, EEOC, DOL, OFCCP, OSHA, and NRC.

Mike is the Chair-Elect of the Labor & Employment Section of the State Bar of Arizona. He has also served on the House of Delegates of the American Bar Association and on the Board of Governors of the State Bar of Arizona. Mike received his J.D. from Arizona State University College of Law and his B.A. from Arizona State University, and attended the Executive Education Program at the Kellogg School of Management, Northwestern University.


  • Employment litigation
  • Employment counseling
  • Internal investigations and audit response
  • HR and compliance reviews for M&A transactions; culture reviews and recommendations
  • Employee privacy and cybersecurity
  • Compliance and ethics programs
  • Executive contracts and negotiations
  • Arbitration, mediation
  • Collective Bargaining support/strategy
  • Union certification, election, decertification
  • ADA compliance including public accommodation
Mehr +



  • Arizona Public Service Company (Pinnacle West Capital Corp.), Phoenix, AZ, 2012-2018
    • Director, Human Resources, 2014-2018
    • Senior Legal Counsel, 2012-2014
  • Greenberg Traurig, LLP, Phoenix, AZ, 2005-2012

Anerkennung durch den Markt

  • Recipient, Association of Corporate Counsel, "Arizona Corporate Counsel of the Year,” 2014
  • Valley Leadership Institute, Class 34
  • Treasurer, State Bar of Arizona, Labor & Employment Executive Council (will Chair in 2019-2020)
  • Board of Directors, The Herberger Theater Center, 2017-present
  • Delegate, American Bar Association House of Delegates, 2009-2015
  • Board of Directors and Vice President, Boys and Girls Clubs of the East Valley, 2007-2011
  • Board of Directors, Valley of the Sun Human Resources Association, 2011-2012
  • Board of Governors, State Bar of Arizona, 2007-2008
  • Member, SHRM; AZ HR Executive Forum 2014-present


Akademische Ausbildung
  • Executive Leadership Program, Northwestern University, Kellogg School of Management, 2015
  • J.D., Arizona State University Sandra Day O'Connor College of Law, 2002
  • B.A., Arizona State University, 1999
  • Certification, SHRM-SCP
  • Arizona