C2252 What was the purpose of this twenty percent success rate?

The employees of the Ning Group would usually arrive at the company before 8 o'clock. If they met with a traffic jam on the way, they might be late, so they would first call their boss to request leave so that they wouldn't be caught by Ning Cheng Xuan. Then, things would become even worse, like last time where people who were late were punished to stand outside