If you get, if don't already have one, a DUN number and then use Dunn & Bradstreets collection service, it will effect their credit rating as a business.
I forget how much percentage they take, but it really isn't much. They send out form letters and they have different levels of service, but even if they take 100%, at least you aren't leaving with them bragging to all their friends about the free job they got. Instead they will be explaining why they stiffed you, in Chinese or English.
I am contracted through a builder and will, every once in a while work off a work order, they take for ever to pay through a work order (currently waiting for $1,200 worth right now), where as if I use a AFP (application for payment), they pay about 3-weeks and sometimes sooner.
All the Supers, but the one they were talking about, told me about this one Super that will ask you to do something and after you are done and you go to bill or ask him to right up a work order, he burns you. You have to have a work order before work begins, otherwise they won't pay.
He then brags to all the other supers about how he got some free work done.
The office asked me to bid on an up coming job with him being the Super, I kicked up the bid price, and they asked why. I told them because of the extra garage. She told me that they were having troubles getting people to go out there anyways. So they took the bid.
LOL!! He is going to be a pain, but I'm going to make good money putting up with his B.S.