Question: does your project timesheet allow user entry into the future or into the past?
Actually, the past is kind of a no-brainer. Aren’t all entries for the past? But this question is more applicable to the distant past, like the month before last. Who would ever want to do that?
Sometimes entries into the past are simple mistakes. The user doesn’t realize they entered into last month instead of this month. But sometimes users think they can affect client bills if they go back and “fix up” previous client date ranges. This is rarely the case, because those kinds of entries usually go unnoticed.
Consider either locking previous date ranges, or turning off the ability to enter time into the past or future.