Tom McNulty's practice focuses on commercial litigation and white-collar criminal defense. Tom defends companies and individuals in civil and criminal litigation involving federal and state governments and in enforcement actions by government regulatory agencies. He also regularly advises businesses and their executive management regarding compliance issues to avoid government sanctions, and he has conducted numerous internal investigations on behalf of corporate boards of directors and senior management.

Tom currently represents Erwin Mayer, a former tax partner/shareholder at the law firm Jenkens & Gilchrist, in a complex multiple-defendant tax evasion and conspiracy indictment pending in the Southern District of New York. He has represented Simon Property Group and its affiliates in a range of commercial litigation matters, including trademark, contract, and fraud actions. Tom also represents Woodward, Inc., an energy and aerospace systems manufacturer, in sealed "whistleblower"complaints alleging violations of the federal False Claims Act and also advises Woodward in connection with acquisitions and suspension and debarment matters. Tom represents CHS Acquisition Corp., a specialty steel manufacturer, in a variety of commercial litigation and product liability matters.

Tom is a member of the Litigation and Criminal Justice Sections of the American Bar Association and is a member of The Chicago Bar Association. He is active in pro bono matters, teaches in the Constitutional Rights Foundation Chicago's Lawyers in the Classroom program, and is an officer and development committee chair for Indiana University's Maurer School of Law Alumni Board.