Email Reminders to Employees About Missing Timecards

Hi Team,

We know Oracle has standard reports to show Missing Timecards but we want to know if we can send reminder mails to employees who have not submitted there timesheet. E.g. each Thursday at a specific time it will check for the Users who have not submitted their timesheet for that week and will then send them a reminder mail to complete their timesheet. How can this be achieved. We are using R12.1.3.