Discuss the controls that will be appropriate in the following instances.

(a) An employee submits a duplicate timesheet inadvertently.

(b) An employee spends 15 hours extra on a job than what has been budgeted for.

The employee claims the hours as part of a forthcoming project.

(c) The payroll clerk receives timesheet information, checks that the number of hours allocated for a job are not exceeded and arranges for payment of salaries.