A timesheet is a document or sheet that you use to track how long you work on specific tasks or activities. It is like a log for your work day. You can use a timesheet to figure out how much time you spent on different tasks, like meetings, writing emails, going to the store for supplies, or even just taking a break. With the timesheet, you can easily see how much time you spend on each activity and make sure you are staying on track to get everything done.