He was state secretary of the Transport Workers' Union and also sat on the Canning Shire Council,[1] including as deputy president for a period.

He and his supporters drove a double-decker bus from Perth to Melbourne and Adelaide to collect signatures on a petition and organise local committees.

[8] In later life, Bennett was the secretary of the Municipal Employees Union of Western Australia (MEU), an organisation associated with the LaRouche movement.

In 2000, he became the inaugural chairman of the Curtin Labor Alliance, a LaRouchite political party formed as a joint venture of the MEU and the Citizens Electoral Council.

In a speech to its inaugural conference, Bennett predicted an imminent global financial collapse and stated that the "new party will change the course of this nation in the very near future".