His work is held in several public collections, including those of the National Gallery of Australia and the State Library of Victoria.
[1] Both Mason's lack of formal training and autism have identified him as one of the key figures within the Outsider Art category in Australia.
However, in recent years his work has also achieved success in more conventional art institutions and has been acquired for major collections at the National Gallery of Australia and the State Library of Victoria.
Mason cites as a major influence the artist Ron Mueck,[2] with whom his work shares the Hyperrealist style that emerged from photorealism, and whose subject matter is derived from reinterpretations of photographic imagery.
"[2] In recent years Mason has developed a tendency towards smaller-scale ceramic pieces and has expressed a strong interest in pursuing taxidermy in his work, which APA Studio Manager James McDonald describes as "a logical next step.