The Payment Card Industry has addressed access to cardholder data through the Standards and identify what screening that potential employees must pass in order to gain access to cardholder data including reports. This standard is required for EMPLOYEES and recommended even if the employee is a cashier and exposed to one card at a time.
12.7 Screen potential personnel prior to hire to minimize the risk of attacks from internal sources. (Examples of background checks include previous employment history, criminal record, credit history, and reference checks.)