Federal law requires that all non-exempt employees complete time sheets showing the actual number of hours worked. These time sheets must be signed by your Department Head and submitted to the Payroll Office. Weekly time sheets must be submitted to the Payroll Office by Monday following the week just worked, for paychecks to be issued on that Friday. Semi-monthly time sheets must be submitted by the second working day following the period just worked. Each employee is responsible for seeing that his or her properly completed and approved time sheet is submitted to the Payroll Office.