Office paper has long been recycled, and you can find paper recycling centres all over the Western world these days, including Australia. One of the most important things to do before office paper can actually be reprocessed is to collect it from offices in the first place. Although most people do not throw paper into wastage bins any longer and take the more responsible action of putting them into dedicated recycling bins, this is not always practical for sensitive documentation.
One of the great things about metal is that it is relatively easy to recycle into new components and products at the end of its working life. Most metals can be simply melted down in order to turn them into new ingots which manufacturers can subsequently use in any way they choose. That said, metal that has been alloyed or covered in some sort of coating takes more energy and time to recycle.