Since most unclassified exempt employees work a traditional Monday through Friday work week, EmpCenter requires acknowledgement of any time entered on a weekend day. 

When time is entered on Saturday or Sunday, EmpCenter will generate a red level exception noting "Total hours recorded are greater than 40.  Only 40 hours per week can be entered.":

unclassified exempt employee timesheet with over 40 hours recorded error

If the time was entered on the correct day, the employee or supervisor must acknowledge the exception by checking the box under the Acknowledge column:

box checked in the acknowledge column of the exception

Once the exception is acknowledged and the timesheet saved, the exception changes to a yellow-level warning:

over 40 hours exception acknowledged and saved

If the time was entered on the wrong day, change the time to the correct day and save.  The exception will go away.