About Us

• Established in 1979, O'Halloran Kosoff Geitner & Cook, LLC ("OKGC") is one of the premier mid-size law firms in Illinois, able to combine personalized service and affordability with sophistication and specialization. OKGC has offices in Northbrook and O'Fallon, Illinois, serving clients throughout the Midwest and beyond. OKGC's primary practice areas include litigation, insurance defense, product liability defense, employment, general corporate, business transactions, trusts & estates, real estate and construction law. Its clients run the gamut of Fortune 500 companies, national insurance companies and insurance brokers, local businesses and individuals. OKGC currently maintains a 16-attorney litigation group through which it provides a broad range of litigation services, from municipal to commercial/business to employment to insurance defense. The group's municipal department defends over 300 public entities, including their officials and employees in federal, state and administrative courts. The commercial litigation department includes attorneys from some of the most respected law firms in Chicago's Loop and has an unparalleled record of trial success. The employment law group, in addition to providing litigation and counseling services, gives seminars and provides training throughout the state of Illinois in various areas of employment practices.