Mason became a councilman in the city of Parma and was eventually elected the Law Director and Chief Prosecutor, serving for six years before taking his current position.
Mason is currently the chair of the Ohio Internet Crimes Against Children (ICAC) Task Force.
He co-wrote, with Jack P. DeSario, Dr. Sam Sheppard on Trial: Case Closed (Kent State University Press 2003).
A 2008 Cleveland Scene article revealed a number of criminals who donate large sums of money to Mason's political campaigns.
[4] In 2010, the Cleveland Scene stated that "federal charges against him are expected within the next two month"[5] as part of the federal investigation of corruption in Cuyahoga County politics that convicted County Auditor Frank Russo and Commissioner Jimmy Dimora, but no charges were actually filed.