Noether classes of posets arise in a natural way from the constructively meaningful variants
of the notion of a Noetherian ring. Using an axiomatic characterisation of a Noether class,
we prove that if a poset belongs to a Noether class, then so does the poset of the finite
descending chains. When applied to the poset of finitely generated ideals of a ring, this helps
towards a unified constructive proof of the Hilbert basis theorem for all Noether classes