My company also requires written notes from doctors or hospitals. However, I have never called out sick at my job, because I work 7 days in a row, then off for 7 days in a row, then so on. I was sick once, and they allowed me to go home like an hour early. Maybe if you talk with your boss, maybe you can work out a way to compromise something. Like for example, if you finished all of your duties, and are doing nothing, maybe your boss can let you go home earlier?
