In this day and age, there are numerous resources readily available to assist an employer in conducting his due diligence investigation. An employer had better educate himself and utilize these tools where appropriate or he may find himself a defendant in a negligent hiring lawsuit.  Some examples of these tools are: Criminal background checks Employment history checks Credit history checks State and Federal licensing checks Driving histories Reference calling Military record checks Bankruptcy filings Medical exams and medical record checks Drug testing Civil Court record checks Social medial checks Sex offender registry checks