Any offer of employment may be contingent upon receipt of acceptable results from a post-offer background screening, if required for the specific position, which may include, for example, identity verification, employment history, motor vehicle driving record history, and criminal or sexual offender records history. FIs are responsible for contacting the households in-person and/or by phone to introduce the study and gain cooperation, setting appointments, completing the interview, and collecting and following up with electronic and hard-copy signed documents.