While interning at the district attorney’s office, Chuck assisted with the prosecution of DUIs, misdemeanors, and violent crimes. After becoming a licensed attorney, Chuck accepted an appointment as an assistant district attorney, a position held until joining rrb in 1991. While serving as the district attorney, Richardson compiled a 100% conviction rate and led his office to a record-setting conviction rate that exceeded 95%.
In June of 1997, Governor Frank Keating appointed Chuck to serve as the district attorney for Tulsa County. During his tenure as district attorney, Chuck led the office in implementing policies for the approval of criminal charges, increasing the sentences of violent criminals, approaching property crimes from a standpoint of compassion, and developing a work environment that fostered success.