Oliver's active involvement and support of Arizona 4-H spans more than four decades. He founded the "Los Conquistadors" 4-H Community Club, served as a founding father on the Arizona 4-H Board of Directors, and spent over fourteen years as a Trustee for the Arizona 4-H Youth Foundation.

His service to 4-H includes two terms as President of the Arizona 4-H Youth Foundation. He continues to serve on the Pinal County Fair Advisory Board. He is a long-time member of the Pinal County Cooperative Extension Advisory Board and continues his legacy of leadership and service to 4-H as an active volunteer and key resource leader in Pinal County 4-H.