My student worker works on Fridays. Can I sign off on her projected Friday hours to get the time sheet turned in on time each week? A My student worker works on Fridays. Can I sign off on her projected Friday hours to get the time sheet turned in on time each week? Category: FWS Supervisor If your student is reliable and you know that she will come in on Friday, you can go ahead and submit the timesheet. If for some reason she doesn’t come in, you can submit a correction to the timesheet, but the correction must be submitted to payroll by Monday afternoon.