The properties of things which give them economic value are created through work.

Even the cultural norms by which one can say that something belongs to them (often we desire things to the extent we want them to belong to us) requires work.

One can say that work is a necessary condition for value (in the economic sphere), if not a sufficient condition.

I am not saying that work is a sufficient condition for something to have economic value. If it were a sufficient condition then all that would be required for something to have value is that work is applied to it. But that is not what is being argued.

If something has economic value, one can assume that it's value comes from the work that came into acquiring, producing, distributing(making it available), making its value known or allocating.