Jack has lectured on various areas of employment law at Indiana University School of Law and Butler University. He has also been a speaker for the annual National Labor Relations Board seminar on labor-management relations and has addressed several seminars and programs sponsored by the Indiana State Chamber of Commerce, the Indiana Manufacturers Association, and other employer organizations. In addition, he has published a number of articles in the area of employment law including: "AIDS in the Workplace - Legal Aspects;" "AIDS: Handbook for Employers;" "The Scope of Substance Abuse in America: Why Business Should Be Concerned;" "Workbook for Private Non-Union Employers Considering a Drug Screening Program;" "Workbook for Private Union Employers Considering a Drug Screening Program;" "Workbook for Public Sector Employers Considering a Drug Screening Program;" "Current Issues in Employment Law;" "Americans with Disabilities Act - An Overview;" and "Avoiding the Union: What to Do When the Union Knocks."

Jack received his B.A. degree from DePauw University and spent several years in the United States Air Force before receiving his J.D. from Indiana University School of Law-Bloomington in 1961.