User specific interfaces are a relatively new option for Airtable, so there probably aren't any templates with that use case yet. I know from my own efforts that working with them can sometimes be a little more complex than meets the eye.
While I've never personally built an employee timesheet in airtable, I have built a daily scheduler for myself, as well as some very employee-heavy bases and interfaces, so I can probably whip something up for you. I'll send you a DM and you can let me know if you're interested.