A waste compacting apparatus comprises an outer framework; an inner compacting chamber; a compaction plate assembly; and a waste ejection assembly for ejecting compacted waste from the apparatus. The inner compacting chamber comprises a pair of spaced apart side walls and a base, wherein the side walls and base are fixedly attached to the outer framework. The inner compacting chamber is positioned within the outer framework such that the side walls and the base of the inner compacting chamber locate within an interior space of a roll cage when a roll cage is introduced into the framework. The compaction plate assembly includes a press plate which is moveable between an upper position and a lower position within the inner compacting chamber such that waste within the inner compacting chamber is compacted by the press plate. The waste ejection assembly comprises at least one pusher plate configured to move between a retracted position located at a rear region of the inner compaction chamber, and an extended position located at a front region of the inner compaction chamber. A method for compacting waste using the apparatus is also disclosed.