If you are a salaried employee, any paid vacation days and personal time off (PTO) you may have are usually built into your yearly salary, and you won’t have to adjust your calculations to account for them. If you did take any time off without pay, you would need to adjust the calculations to account for that. For hourly wage employees, the calculation might be a little more complex. Some hourly wage jobs offer their employees paid vacation days, meaning there isn’t a need to make any adjustments. But if you do not receive paid vacation days, you will need to adjust the calculations to account for any days you took off without pay. This is why we use the average hours worked per week figure, which can be slightly lower than the typical hours worked per week alternative.