John serves on the Board of Directors of the Civil Justice PAC of the Georgia Trial Lawyers Association.

John serves on the Advisory Council of Stetson University College of Law in St. Petersburg,Florida. In addition, he serves as Chairman of the Board of Directors of the Etowah Scholarship Foundation, Inc. John is actively involved in several community organizations:  his local church, The Church at Liberty Square; Excel Christian Academy; the Rotary Club of Etowah; the Cartersville-Bartow County Bar Association; the State Bar of Georgia; the Fiduciary Section of the State Bar of Georgia; the Real Property and Probate Section of the American Bar Association; the Taxation Section of the American Bar Association; and a number of other local organizations. John is married to Jillian Jones Mroczko and is the proud father of John T. ("Jack") Mroczko, Jr. and Millie Grace Mroczko.