LEGAL SERVICES
Mediation and Arbitration
Arbitration and mediation are familiar ground for Sacks Tierney's veteran litigation attorneys, including members of
the American Arbitration Association (AAA)
commercial and construction arbitration panels.

Arbitrators and mediators Sharon Shively,
Greg Gillis and
David Tierney
State-of-the-Art Conference Center
Litigation attorneys
and their clients enjoy our new state-of-the-art 3,500-square-foot conference
center, fully equipped with audio, video and network technology, and designed
for the shuttle diplomacy required for a negotiated resolution.
Matter-Specific Knowledge and Experience
Sacks Tierney arbitrators are experienced in matters involving construction law,
commercial law, creditors' rights, medical practice disputes, real estate
valuations, contract clause disputes, and other important areas. Our attorneys
serve as sole arbitrators, members of three-arbitrator AAA panels, and as settlement
conference judges for State Court proceedings.
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David Tierney is a past chair of the
State Bar’s ADR Section and in four separate years has ranked among Super Lawyers’
top 50 Arizona attorneys. A veteran litigator, he is experienced in
mediating and arbitrating a broad range of matters. David serves on AAA’s
Commercial and Construction arbitration panels and Construction Mediation
Panel. He and has been listed in The Best Lawyers in America® since
2006.
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Sharon Shively, a 10-time Super
Lawyers selectee and 11-time Best Lawyers honoree, frequently
serves as a mediator and arbitrator in complex,
multi-party matters. Sharon is a member of two of AAA’s top arbitration
panels – Commercial and Construction – as well as the AAA Construction Mediation
Panel. She is experienced in matters
involving construction, creditors’ rights, real estate and general
commercial disputes.
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Greg Gillis has nearly 30 years of trial
experience in a wide variety of construction disputes and commercial litigation
matters. He has extensive experience as a neutral in mediating construction and
commercial disputes. Greg is a member of AAA's commercial and construction
panels of arbitrators and mediators. In addition to his AAA experience, Greg
serves as a Judge Pro Tempore for Maricopa County Superior Court, conducting
settlement conferences involving a wide variety of civil matters. He has
received the Martindale Hubbell AV Preeminent® rating and has been a Best Lawyers in America® honoree since 2012 and a Super Lawyers selectee since 2014.
ARTICLES
Arbitrator Alert:
Awarding of Attorney’s Fees in Implied Warranty Cases,” David Tierney,
August 2017
Trends in Arbitration and Mediation Case Law, Local and National,
David Tierney, August 2016
“The Litany of Dispute Resolution Options Can Be Confusing,”
Greg Gillis, Scottsdale Airpark News, July 2016
Arbitration in Arizona: Changes Have Arrived,
David Tierney, March 2013
“Arbitration in Arizona: Changes Are Coming,” David Tierney,
September 2010
PRESENTATIONS
“Drafting Effective Arbitration Submission Agreements” (David
Tierney, panelist), State Bar of Arizona ADR Section, September 2018
“Different Approaches to Dispute Resolution” (Greg Gillis, panel
mediator, and David Tierney, panelist), State Bar of Arizona Annual Convention,
June 2018
“ADR Talks” (David Tierney, panelist), State Bar of Arizona
Annual Convention, June 2018
“ABCs of ADR” (Greg Gillis), Arizona Builders Alliance, October
2017; Southwest Business Credit Services, Legal Insights Educational Series,
March 2017
“Private Arbitration Update” (David Tierney, co-presenter),
American Arbitration Association, November 2016
“ADR Talks” (David Tierney, panelist), State Bar of Arizona
Annual Convention, June 2016
“Arbitration and Mediation ‘Nuts and Bolts’ for Owners and
Contractors” (David Tierney), Lorman Education Services, March 2010
“Mediation vs. Arbitration – Trends in Alternative Dispute
Resolution in Arizona” (David Tierney), Lorman Education Services, March 2009