If you're currently in a Professional Employer Organization (PEO), you've probably wondered if you should have played the field a little more. PEOs are guilty of relying on the complexity of their set-up to obscure costs and keep you from being as well-informed a customer as you might for other services like an accountant or a software vendor.

But "difficult to tell" doesn't mean unknowable. Read on to find out how to do your due diligence with any PEO.