OATS: Online Automated Timecard System is based on PHP language that implements a timesheet on group based web portals by the users. Supports multiple users and allow them to login via password. Outputs display summarized timecard, full time card, and submitted time card. HTML, PDF are supported in report files. Templates can be allowed in timecard creation. New timecards are started after submitting the old one which can be archived. POP3, IMAP, and database are the authentication methods this script support.