Say you're a parent working for Walmart or Amazon. You have to get to work at 8.30AM so the store can open at 9AM. Your kid starts school at 9AM. How are you going to get your kid to school?
Now, while companies often have absurd requirements of their employees' time, I specifically chose the Wal-Mart example to illustrate a non-absurd requirement: a site needs its store clerks present at opening time to be able to open at opening time.
Surely not every employee has to do school drop-off in the morning though?
They walk there, use a bus, etc.