The last line of defense your company has against expense reimbursement fraud may come from your bookkeeping department. While supervisors and managers often review expense reimbursements, the bookkeeping department can provide a different point of view. By reviewing supporting documentation for sufficiency and reasonableness, a bookkeeping department may also be able to spot potential expense reimbursement fraud just by the nature of the expense. Common Forms of Expense Reimbursements Expense reimbursements typically happen in one of two ways; Use of