So Early?

The wife pressed the light switch on the wall, casting a faint glow in the room.

They both leaned in, together reading through the thick employee handbook.

"The first rule: This company strictly prohibits behaviors that significantly affect work efficiency, such as arriving late or leaving early!"

Hmm, not allowing tardiness or early departures, seems reasonable enough.

Most companies dock pay for being a minute late, considering over an hour as an absence, resulting in a full day's wage deduction.

"Wait, something seems off!" As the wife read on, she suddenly noticed a discrepancy in the first rule, "Isn't this sentence about arriving late or leaving early placed incorrectly? Shouldn't it be 'late arrivals and early departures'?"

What on earth is 'early arrivals and late departures'?