If you are salaried exempt, your annual salary is divided by 52 weeks to find an effective weekly salary, and that weekly salary is divided by the number of days in your normal work week to find an effective daily salary . Any day you either work at all (even a short day or fewer than normal hours) OR don't work but have and use a day's PTO, you get that day's salary. You do not get extra pay for working more than 40 hours or working additional days durinfg the week (e.g. if you usually work M-F, you don't get extra pay for Sat. or Sun. work). The maximum you can get a week is your weekly salary, even were you to not sleep and work 168 hours. However, you can get less than your weekly salary if you do not work one or more days while using PTO (or having paid hoilday, if your company offers them) for the unworked days.