I have always told my bosses and none of them have had a probelm with me takin off work for a dr apt. or a tune up for 2 weeks. I mean we are on Meds and I dont care which one it is or how long u have toke it they all have side effects and at anytime something could happen. I hate to think that way but what if by chance something did happen and medical people asked ur boss if u had any health problems she would not have a clue what to tell them beucase they didnt know u had cf or cfrd so how would they know how to treat u if something did happen???? there is nothing wrong with cfers working I have worked for the last 7 years but do u know how bad ur boss or co workers would feel if something happen to u and they did not have a clue how to help u?? Just something to thing about put ur self in ur bosses shoes or co workers shoes.........................