I call them and ask to speak to someone, a regional manager for example. If I can't get a live person in charge on the phone to feel them out, ask some questions such as payment etc I turn back the order.
A client that has no agreement with you cannot require you to do anything, nor are you obligated to do anything. You are certainly free to contact them and discuss the potential assignment if you wish.
Do you factor your existing clients?If you decide to accept the new client assignment do you wait for payment or factor the new client?
Generally I come on here and do a search - and look through the Clients - G,B, U section to see if others have any issues with said "client"from clients you've never done work for?
Selling accounts receivable.Sorry, but I think I'm missing what "factoring" means