MM Ltd. manufactures car components for the automotive industry. It has an automated payroll system. The company is reviewing the controls that should be in place across the system. Outline of payroll system: Phase 1: Maintaining employee master data HR department Phase 1 processes: MM employs 100 staff who are paid using the payroll system. An employee file is maintained for each employee in computer master files and in hard copy. Master files are updated by the human resources (HR) assistant for new hires, terminations, changes to wage rates, or employee personal details. Pay is based on a basic hourly rate, with overtime payable at 1.5 times the basic rate. Control objectives: The security of payroll data is adequately maintained. Only employees of the organization are paid for the hours they worked