I had no previous relationship with this person. Its a Payday-loan in the state of Florida. I was talking with another lender and he was telling me his store no longer lends or lends very little to collection employees because of their higher rate of default.
That clears things up quite a bit. I was under the impression you were in some non-financial business and were approached by this person to make a loan you would not normally make. That doesn't seem to be the case here.
It makes sense that CA agents would have a higher default rate; imagine that your job was to spend all day trying to collect money from people who don't pay, and that you were largely unsuccessful in your efforts.
The difference is that most of those people he's collecting from don't have a job or means to pay. This person is employed. You can sue them yourself if you're not comfortable turning his case over to your regular CA.
Unless you signed some contract that states differently, in Florida you're allowed to collect up to the 10% fee, $5 cost, and any bad check fees you incurred. You can't turn this into a criminal matter, but you can recover court costs if the court approves it. You can collect interest on a judgment for a payday loan.
Here's a good overview of the restrictions on Florida payday lenders:
http://www.nolo.com/legal-encyclopedia/florida-restrictions-payday-loan-lenders.html
http://www.nolo.com/legal-encyclopedia/florida-restrictions-payday-loan-lenders.html