Harold,
We used to have a clause in the Contractors contract over here, it was called a "Paid-if-paid" clause, we were encouraged to strike this clause out by the NZSCA(NZ Sub-Contractors Association), this was formed after all of the crap that happened,when the building companies here went bust!.
As an insult to injury, most of the builders had also used up all of the Subbies good-will,with their suppliers, they they could not get credit to start the next job, to work themselves out of debt. [Linked Image]