If caught early, there are several consecutive days holiday at the beginning of the month, the short time of pay band che down further, which will cause this problem.
If caught early, there are many holidays together in the early days, it will make the Chase to spend a short period of time to another. This will cause this problem again.
If the beginning of the month are on holiday together several days at the beginning of the month, it will make the time compared to pay such as short down again. Which will cause this problem.