Mark Weissburg

Mark Weissburg is a dedicated Illinois attorney and Partner at Horwitz, Horwitz & Associates. He focuses exclusively on workers’ compensation and related areas of injury law. With decades of experience, he has helped thousands of injured workers across Illinois secure the benefits they deserve, combining legal precision with client-focused care.

Mark earned his Bachelor of Science from the University of Wisconsin–Madison in 1987 and later received his Juris Doctor cum laude from The John Marshall Law School in 1995. During law school, he served on the editorial board of The John Marshall Law Review and provided volunteer legal services with the Legal Assistance Foundation of Chicago. His legal career began with a focus on Social Security disability law before shifting to workers’ compensation.

Mark is widely recognized for his contributions to worker advocacy and legal education. He authored the 2007 book How to Win a Worker’s Compensation Claim in Illinois, a practical guide written to help injured workers understand their rights and avoid common pitfalls in the claims process. He frequently lectures at legal and union events and has spoken to groups including firefighters and laborers.

Mark is admitted to practice in Illinois, the U.S. District Court for the Northern District of Illinois, and the U.S. Court of Appeals for the Seventh Circuit. He is a member of the Workers’ Compensation Lawyers Association, Illinois Trial Lawyers Association, and the Workers’ Injury Law & Advocacy Group, which has twice named him a Top Injury Attorney.

Mark Weissburg brings deep knowledge, compassion, and dedication to every client he represents. Through skilled legal representation and accessible legal writing, he continues to fight for the rights of injured workers across Illinois.

Law Office Affiliations

• Partner, Horwitz, Horwitz and Associates, Ltd.
• Member, Workers’ Compensation Lawyers Association
• Member, Illinois Trial Lawyers Association
• Member, Chicago Bar Association
• Member, Will County Bar Association
• Member, Workers’ Injury Law & Advocacy Group

Licensed State

• Illinois

Education

• The John Marshall Law School
  Juris Doctor (JD)
• University of Wisconsin
  Bachelor of Science (BS)

Awards & Badges