Employee turns office clock back 10 minutes to make it look like she arrived at work 10 minutes early

She changed the time that her coworker signed in on the sign-in sheet to make herself look overly punctual.

It's better to be early than late! As a certified early bird, I know all too well that if you plan to get somewhere early, you're way less likely to get there late, which sounds like common sense. But a lot of people don't plan to be late, but still end up being late, basically everywhere they go! There are so many people who try to get to places on time but end up late because of traffic or the train breaking down, even though those are obstacles that they could've predicted based on where they live and the time of day. If you leave early, you buy yourself more time if something comes up, so you're more likely to get where you need to be on time. 

But one downside to being early is that most people aren't early birds. If you arrive 15 minutes early for dinner, the hostess might not seat you without your entire party, so you have to stand outside the restaurant for 15 minutes while everyone else arrives, and wait even longer if your companions are late! When I was a kid, my family would arrive at events an hour early, so we would have to wait in the car for 30 minutes because the doors weren't even open yet. That's the kind of extreme earliness that might actually be kind of a waste of time. 

The employee in this story was not early to the office, but she wanted to convince her bosses that she was.