The best practices for responding to inquiries about current or former employees is to designate a trusted employee at the company to field all those calls. Typically it’s going to be your HR manager or the HR director that’s going to answer those types of questions. Also, the information that should be provided during those inquiries is going to be the person’s position with the company, what their job duties were, and the person’s salary. If the company asks for whether or not the individual is eligible for rehire, you can offer that information as well.