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Home > All Attorneys > Matthew C. Siderits

Matthew Siderits focuses his career defending insurance companies, third-party administrators, and self-insureds in workers’ compensation matters. His experience ranges from straightforward scheduled injury claims to complex multi-party occupational disease cases, as well as permanent and total disability cases.

He is frequently consulted by his clients on issues relating to claims strategies, recommendations, and formal representation on both non-litigated and litigated matters through the hearing process and on appeal. He has presented numerous seminars to insurers, third-party administrators, employers, and other groups on topics from introductory workers’ compensation courses and legislative and statutory updates, to detailed presentations on death benefits, Medicare set-asides, and return to work issues.

Matthew began his legal career in 1996 with a general practice firm in downtown Milwaukee focusing his practice on real estate, personal injury, and employment law with an emphasis on litigation. In 1998, began to concentrate in defense of workers’ compensation cases working for a well-known Milwaukee firm in the workers’ compensation group.

From 2009 through 2013, Matthew worked as a senior attorney at a prominent Wisconsin workers’ compensation law firm and continued his focus on defending workers’ compensation claims. After a brief foray in the medico-legal industry, Matthew returned to practicing workers’ compensation defense and general litigation in 2016 as a senior attorney with a well-respected litigation firm in the Delafield area.

Matt has been an active member of the Pewaukee community for 15 years. He enjoys travel and dining with his wife, Tanya, and spending time with his college-age children. He keeps active by running and cycling and is an avid Badger sports and music fan.

In his free time, Matthew enjoys volunteering in his community and mentoring at his local high school booster club. From 2012-2018 he served as a board member of Pewaukee Sussex United Soccer Club including roles as Vice President of Select Soccer, Vice President of Recreational & Academy Soccer, and coach. He is also active in his local high school booster club.

  • State Bar of Wisconsin
  • Wisconsin Association of Workers’ Compensation Attorneys
  • Milwaukee Insurance Adjusters Association
Presentations and Publications
  • “Wisconsin Workers’ Compensation Overview,” client presentation (March 2023)
  • Legal Update 2022 – Legislative Change of April 2022 and Case Update, 2022
  • Legal Update 2021 – Legislative Changes in 2021 and Case Update, 2021
  • “Is This Treatment Ever Going to End?” – Using DWD 80.73 to Dispute Necessity of Treatment, 2021
  • “Baby Did a Bad, Bad Thing” – Bad Faith and Related Penalty Claims in Wisconsin Workers’ Compensation, 2018
  • Drug & Alcohol Policy Violations – Impact of the 2016 Statutory Changes, 2017
  • “After the Referral: What Happens Next” – Defense Attorney File Handling and Tips for Claims Reps, 2016
  • “The Death of the Idiopathic Injury Defense in Wisconsin Worker’s Compensation” – Wisconsin Civil Trial Journal, Winter 2006, Vol. 4 No. 3 (co-author).
  • “Defamation in Cyberspace: Reconciling Cubby, Inc. v. Compuserve, Inc. and Stratton Oakmont v. Prodigy Services Co.” – 79 Marquette Law Review 1065, Summer 1996.