Roberts was a Coast Guard veteran with a long record of public service. He is credited with restructuring Florida's jumbled court system into the four-tiered arrangement still used today, and also with creating Florida's public defender system which provides lawyers to criminal defendants who cannot afford representation.
After his stint as justice ended, Roberts returned to private practice, becoming a founding partner with Roberts, Miller, Baggett, LaFace, Richard & Wiser in 1976 and later retiring when the firm merged with the large statewide law firm Greenberg & Traurig in 1992. Today, some colleagues who worked with Roberts in his post-justice law firms describe him as an unrepentant racist until his death, while others note he later expressed regret for his opinions blocking Virgil Hawkins from attending law school and bore Hawkins no ill will. His tombstone describes Roberts as the founder of the FSU College of Law.