Q. In this morning’s mail I received a letter from some group I have never heard of, asking for payroll information on an employee. The letter said, “This information is necessary to enforce court-ordered child support.” It does not say that it is a subpoena or a garnishment, and there is no court order or any kind of a waiver from the employee. I have already tossed it in the trash, but I don’t want to do something wrong. Do I need to dig it out?—S.W.