JBM Catering and Hire provides a full catering service to mostly commercial businesses, that includes both the preparation of specialised menus and the hire of relevant catering supplies (crockery, cutlery, table linen and décor items) and equipment (such as tables, chairs, and servers). You have been assigned to the audit of JBM Limited for the current year. During the planning stage of the audit you have identified the following significant risks: 

a) Accounts payable. JBM has a large number of suppliers for various catering supplies and equipment. Paying the supplier twice for the same purchase has been an ongoing problem. 

b) Payroll expense. JBM employs a large number of casual staff to assist with waitering, cleaning and packing for the catered events. These events often take place over weekends and at night, with some events requiring overtime hours being worked. There have been frequent occurrences of standard weekend and night shifts being paid at overtime rates. 

Required: For each of the accounts for JBM Catering & Hire (1 and 2 above) identified to be a significant risk: 

1. Determine the key assertion at risk. 

2. Describe a practical prevent internal control that would directly address the risk. 

3. Describe a test that you would perform to assess whether the control was functioning correctly. Prepare a table as shown below to complete your answers to this question. Account at risk a) Accounts payable b) Payroll expense a. Key assertion at risk b.