The manager needs to solve the lateness problem, because simply enabling it doesn’t solve it. 

If there’s one thing I hate, it’s tardiness. I’m not talking about someone being late once, but rather chronic lateness that persists without resolution. I know that every time I hang out with one friend that shall remain nameless, the train is not running 20 minutes behind, despite their claims. They chose to leave when they did, which means they didn’t give themselves enough time to arrive on time in case the train actually runs late. I know that might sound excessive to some, but that’s what I do, and I am hardly ever late for any event I’m supposed to be at. It’s way better to walk around the block for 10 minutes than to run to your destination, hoping that you’ll manage to be less than 15 minutes late. Just because society says it’s acceptable to be late doesn’t mean you have to accept that. 

Being late to work can be socially acceptable, depending on where you work. If your company has employees from all over the world, it’s unlikely that arriving 10 minutes late will cause a major crisis, especially if you’re salaried. But if you work hourly, and you need to stay at the shop you work in until someone else comes in for their shift, a late Lenny will force you to stay late, even after you’ve done all of the work you’re supposed to do. The worker in this story knows that well.