James Kasper is a Partner with Sinars Slowikowski. He is an experienced litigator that has tried cases on both the plaintiff and defense side. He concentrates his practice in complex litigation, toxic-tort, product liability, professional negligence and construction defect litigation. For 19 years, James has successfully defended numerous toxic-tort, product liability, premises, professional negligence, personal injury cases and prisoner rights cases throughout the state and federal courts of Illinois and Indiana.

Prior to joining Sinars Law, James was a partner at Gunty and McCarthy for five years. During that time, he was local trial counsel for numerous national clients, including several Fortune 500 Companies.

James has been selected as a “Super Lawyer” by Illinois Super Lawyers Magazine from 2020 to 2023. From 2012 to 2016, he was selected as a “Rising Star” in the February issues of Illinois Super Lawyers Magazine and Chicago Magazine, a recognition earned by no more than 2.5 percent of lawyers in Illinois. Additionally, he was named an Emerging Lawyer by the Leading Lawyers Network from 2015 and 2016, a distinction reserved for the top 2% of Illinois lawyers who are 40 years old or younger and have proven themselves professional, ethical and experienced.

James is a proud member of the Federation of Defense & Corporate Counsel, a professional trade association of vetted civil defense litigators, senior corporate counsel, and insurance claims executives dedicated to promoting knowledge, fellowship and professionalism for lawyers and other professionals striving to achieve a balanced justice system in the defense of civil lawsuits. Additionally, James is a former certified contract advisor of the National Football League and The Canadian Football League.

Outside of work James enjoys attending his son’s sporting events, coaching his son’s teams, and running marathons.

Speaker. FETTI Conference: "The Artificial Turf Debate — Is a Chemical Innocent Until Proven Guilty?" (2018)