Hamberger & Weiss LLP


Your Defense Partner since 1991

Photo: (L) Mark Hamberger, (R) Ronald Weiss


We are the largest firm in New York State devoted exclusively to workers’ compensation defense

Photo: Buffalo attorneys


We continue to expand our statewide practice to meet a changing landscape

Photo: Rochester attorneys


Committed to our clients through activism, engagement, leadership, and scholarship

Photo: 2016 Seminar


Presenting annual seminars on workers’ compensation topics for more than four decades

Photo: 2016 seminar

Passing of the Torch

Our founding partners, Mark Hamberger and Ronald Weiss, have served on the firm’s Governing Committee, and as Managing Partners in the Buffalo and Rochester offices respectively, since the founding of the firm in 1991. Effective January 1, 2023, Mark and Ron have decided that the time has come to pass the management responsibilities to the next generation. 

Accordingly, the firm created a new Governing Committee, and elected F. Daniel BowersRenée Heitger, and Joseph DeCoursey to serve on that committee, effective January 1, 2023 to manage the firm. Dan and Joe will serve as Managing Partners in Buffalo and Rochester respectively.  

Under Mark and Ron’s 31 years of leadership, the firm has grown to become the largest law firm dedicated solely to Workers’ Compensation defense in New York. Mark and Ron will remain with the Firm as Special Counsel, where they will play integral roles in the firm's continued success.

Your New York State Defense Partner Since 1991
Celebrating our 30th Anniversary!

Gone are the days of handling only hearings and appeals. As the WCL landscape has changed, we have been at the fore, working with our clients, the Board, industry, bar groups, and legislators to shape the discussion and provide a full spectrum of legal services in the workers' compensation arena. These include:

  • Defense of claims from initial file review through trial and summations
  • Section 32 settlement negotiation and preparation
  • Calculation and submission of Medicare set-asides (MSAs)
  • Handling conditional payment recovery demands
  • Loss Transfer arbitrations
  • WCL Section 120 discrimination claims
  • Research projects for clients on major issues affecting workers' compensation
  • Statewide appellate practice before the Board, Appellate Division, and Court of Appeals of the State of New York

Latest News and Updates

2/9/2023 - (Firm News) - H&W Saves Client Nearly $60,000 With Fraud Finding and Permanent Bar on Indemnity

1/27/2023 - (Firm News) - Passing of the Torch

1/24/2023 - () - H&W New York Workers' Compensation Defense Newsletter Vol. 7, Issue 2

1/19/2023 - (Firm News) - H&W Seminar Returns on 4/25/23!

1/6/2023 - (Firm News) - H&W Webinar: 1/18/23 at 11:00am - New York Prior Authorization Request (PAR) Basics

Buffalo Office

700 Main Place Tower
350 Main Street
Buffalo, NY 14202
Telephone: (716) 852-5200
Fax: (716) 852-0003
Email: buffalo@hwcomp.com

Rochester Office

One South Washington Street
Suite 500
Rochester, New York 14614
Telephone: (585) 262-6390
Fax: (585) 262-6399
Email: rochester@hwcomp.com

Copyright © 2023 Hamberger & Weiss LLP