Jeff graduated from the University of Illinois with a degree in Ag Economics. He started in the insurance business in 1989 and opened McMillan Insurance in 2001. He was the former president of Independent Farm Agents of Illinois, Gilman Chamber of Commerce, and the Kankakee Valley Association of Life Underwriters. He is also a member of the Independent Insurance Agents of Illinois. In his spare time, he enjoys watching and coaching his two boys, Jack and Sam. His hobbies include boating and golfing. Currently, he resides in Gilman with wife Lisa, who is a teacher, their two boys, and their dog, Chief.