It is fairly common to have to go through an extensive background check for positions that handle money or that deal with customer finances. If such an employer failed to conduct background checks, hired an employee with a history of dishonesty or theft, and then that employer stole money from a customer, then the employer could be in hot water.
My answers to questions posted on AVVO are intended to provide general information only, and are not intended to be legal advice. Employment law issues typically require a careful case-by-case analysis. Consequently, if you feel that you need legal advice, I would encourage you to consult in person with an employment attorney in your area.