Suppose you have discovered that someone, it should be reported to SafeWork Australia straightaway. SafeWork is the regulatory authority for worksite incidents involving asbestos. The council investigates homes, as well.
Before your complaint, make sure that the person is truly mishandling asbestos. The absence of mask, overalls, and other PPE, working on a windy day, and using power tools are just some of the unsafe ways of dealing with the material.