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McGrath, David W.

David W. McGrath - Manchester, NH

Attorney at Sheehan Phinney

Business Litigation Lawyers in Manchester, NH

1000 Elm Street 17th Floor Manchester, NH 03101

  • 1 Super Lawyers®
  • 34 Years 
    Experience

Manchester Business Litigation Lawyer

Updated: 03/02/2026

Areas of Practice

  • Business Litigation
  • Labor & Employment
  • Mediation & Arbitration

Litigation: 100%

Attorney Information

Overview

Dave serves as Chairman of the firm's Litigation Department and also serves on the firm's Management Committee. Since joining the firm in 1992, he has built a successful general commercial litigation and employment practice. Dave represents firm clients in state and federal courts, arbitration and administrative proceedings. He routinely handles trade secret, non-competition, predatory hiring, fiduciary duty, discrimination and wage and hour cases. He also writes and lectures extensively on a variety of employment related topics. Dave is a certified mediator who serves in that role frequently for the state and federal courts, as well as the New Hampshire Commission For Human Rights.


Awards and Honors

Super Lawyers® Selectees

SuperLawyers

David W. McGrath included in a Super Lawyers® list

Honors

  • Best Lawyers in America
  • New England Super Lawyers
  • New Hampshire’s rising star in the area of Labor/ Employment Law
  • Business NH Magazine as the best employment lawyer in the state, as recognized by his peers, 2015
  • Chambers USA, Labor & Employment, Mediation
  • Best Lawyers in America® 2023 Manchester Lawyer of the Year, Labor Law - Management
  • Best Lawyers in America® 2019 Manchester Lawyer of the Year, Labor Law - Management
  • Best Lawyers in America®, Mediation, Commercial Litigation, Employment Law - Management, Labor Law - Management
  • New England Super Lawyer®, Employment Litigation: Defense
  • Martindale Hubbell, Rated “AV”

Other Sources of Feedback About David W. McGrath

Included on the 2026 New England Super Lawyers list


Past Lists

  • 2025 New England Super Lawyers list
  • 2024 New England Super Lawyers list
  • 2023 New England Super Lawyers list
  • 2022 New England Super Lawyers list
  • 2021 New England Super Lawyers list
  • 2020 New England Super Lawyers list
  • 2019 New England Super Lawyers list
  • 2018 New England Super Lawyers list
  • 2017 New England Super Lawyers list
  • 2016 New England Super Lawyers list
  • 2015 New England Super Lawyers list
  • 2014 New England Super Lawyers list
  • 2013 New England Super Lawyers list
  • 2012 New England Super Lawyers list
  • 2011 New England Super Lawyers list
  • 2008 New England Super Lawyers list

Education

  • Legal Education

    • Cornell Law School, Ithaca, New York
      J.D.
  • Non Legal Education

    • Framingham State College
      B.A.

Current Employment Position(s)

  • Shareholder

Pro Bono Activities

  • Diaconate at his local Church
  • Board of Directors of The Upper Room, a Southern New Hampshire family resource Center
  • Warren B. Rudman Center for Justice, Leadership and Public Policy, Board of Advisors
  • Strawbery Banke Museum, Board of Trustees
  • New Hampshire Bar Association, Immediate Past President
  • New Hampshire Professional Conduct Committee
  • Leadership New Hampshire, Class of 2013

Representative Clients

  • Successfully defended national insurance company in non-compete battle, leading to summary judgment.
  • Successfully defended local municipality in a wrongful discharge lawsuit, leading to a jury verdict for the town.
  • Successfully defended area hospital in an Americans with Disabilities lawsuit and preserved the win at the Court of Appeals for the First Circuit.
  • Successfully defended an international corporate client in a wrongful discharge lawsuit, leading to summary judgment.
  • Successfully defended national corporate client in defense of substantial wage claims.

Published Works

Articles

  • Vigilance: The Watchword for Dealing with Employee Migration in “Hard Times”
  • Fixing Your Non-Compete Agreements Before You're in a Fix: Ten Common Employer Mistakes That Threaten Your Non-Compete
  • Non competes Can Protect Your Company's "Goodwill"
  • Lessons from the trenches: Choosing a good mediator
  • Litigation and Mediation: Friends Not Foes (page 25)
  • Client Alert: A Closer Look at the FTC’s Proposed Ban on Non-competes
  • Fixing your non-compete agreements before you’re in a fix
  • NH Legal Perspective: New law prohibits noncompete agreements for low-wage employees
  • Assessing NH’s New Noncompete Law
  • Mediation Proceedings: Cloaked in Confidence?
  • NH Legal Perspective: Are Employee Noncompete Agreements Worth the Paper they are Written On?
  • Federal Rules of Civil Procedure: A Rule 68 Cautionary Tale
  • Lessons from the Trenches: What Makes a Good Mediator?
  • CEO on the Go: David McGrath
  • NH Legal Perspective: Mediating business disputes
  • Out of the Courtroom and Back to the Boardroom

Bar Admissions

  • New Hampshire, 1992
  • U.S. District Court District of New Hampshire
  • U.S. Court of Appeals 1st Circuit

Other Affiliations

  • New Hampshire Bar Association (Member)
  • Ethics Committee (Member)

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Manchester, NH

1000 Elm Street
17th Floor
Manchester, NH 03101

Directions

Phone: 603-945-9922

Fax: 603-627-8121

Email: Send a message

Website: https://www.sheehan.com/

  • Credit Cards Accepted
  • Virtual Appointments

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