William  Walsh

William L. Walsh


Dedicated to effective advocacy and meaningful case resolution.

Prudential Tower
800 Boylston Street, 30th Floor
Boston, MA 02199-8001

Dedicated to effective advocacy and meaningful case resolution.

  • Biography
  • Recognition
  • Significant Cases

William L. Walsh (Liam) participates in all aspects of the firm’s personal injury practice, focusing on premises liability, medical malpractice, defective medical device claims and construction site cases. Liam brings a fresh approach to each case, working closely with clients to achieve results on their terms.  He worked for the firm full time while in law school before joining as an associate in 2018. His years of experience have helped to cultivate an understanding of meticulous case management and the litigation process.  

Liam is an active member of the Massachusetts Academy of Trial Attorneys and a number of other local bar associations. He currently serves on a legislative research committee for MATA.

Before joining SUGARMAN, Liam worked in constituent services in a district office of the U.S. House of Representatives where he gained valuable advocacy experience. He graduated from Suffolk University Law School in 2018 after earning his Bachelor of Arts in Economics from the University of Massachusetts Amherst in 2015. Having worked and studied internationally, Liam, who speaks French, has a unique perspective from which to approach client issues. Liam is also an avid runner and has completed several marathons, including the Boston Marathon.


  • J.D., Suffolk University Law School, 2018  
  • B.A., University of Massachusetts Amherst, 2015

Bar Admission

  • Massachusetts, 2018
  • United States District Court, District of Massachusetts, 2019


  • Massachusetts Academy of Trial Attorneys
  • Massachusetts Bar Association
  • Boston Bar Association
  • American Association for Justice

"Massachusetts Super Lawyers, Rising Stars", Law and Politics, 2020

Traumatic brain injury and eventual death following excavator accident

Settlement for the daughter of a construction worker who was struck by an excavator's boom on a large development project in Everett. The excavator operator knew that the worker was in the area, but failed to look and make sure that the worker was a safe distance away before the operator moved the boom and violently struck him. The worker suffered catastrophic injuries that eventually caused his death 3 months later. In addition to a host of safety violations and unsafe practices, SUGARMAN attorneys were able to establish that the excavator operator had been previously fired for unsafe operation by the same company that later hired him to work on the development project. The case resolved shortly before trial.

Medical malpractice - Patient suffers debilitating stroke after not receiving medication

Pre-suit settlement of medical malpractice case for 61-year-old man who suffered major stroke after his doctors and nurses failed to administer a critical medication for two days while the man was a hospital inpatient following cardiac surgery.

Driver struck by a commercial truck

Settlement for married 50 year-old father of three who suffered a life-altering brain injury when his car was rear-ended and run over by a commercial truck.

Wrongful death following crush injuries to forklift operator

Pre-trial settlement on behalf of children of a middle-aged temporary worker who was crushed to death between the forklift he was operating and a metal shelving unit in a South Shore warehouse where he had been assigned to work by his staffing agency.

Nursing home guest slips on ice leaving facility

Settlement for a middle-aged woman who slipped and fell on an ice patch at the entrance to the defendant’s nursing home resulting in a rotator cuff tear requiring surgical repair, and back injuries. The client had been visiting her elderly father at the nursing home.

William Walsh
Rated by Super Lawyers

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How SUGARMAN Can Help You.


We will listen carefully to you.


We will advise you regarding your potential case and the relevant law.


We will investigate for you and bring legal proceedings if appropriate.

SUGARMAN lawyers know that the damage done to lives by injury can be profound, yet often difficult to quantify or describe. And those effects last a lifetime. Our personal injury lawyers have the experience and resources to make a powerful case by developing the evidence and using expert consultation and testimony in order to prove your claim at trial. Just as important, we represent the injured and their families with special regard for the social, mental and emotional issues they face.

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