Joan began working as a secretary/paralegal for the lawfirms of Gomien, Root & Rigazio, and Black & Black. After completing law school at IIT-Chicago Kent College of Law, she became a partner in the lawfirm of Gomien, Harrop & Sobol, where she continues to practice today under the name of Gomien & Harrop, Ltd. Joan is a member of the Grundy County Bar Association, having served as past president and secretary. Joan is also a member of the Will County, Chicago, and Illinois State Bar Associations, as well as a member of the Illinois Trial Lawyers Association.