I didn't tell my employer about CF until it became apparent that i was going to need IVs--then i told my supervisors who were awesome and totally willing to work with me. I did tell some of my coworkers prior to telling my supervisors but i never encountered any problems with negative responses or anything. I do work hard at my job and do it well and i was able to show them that i was valuable as an employee before they learned more about my personal life. good luck with the search!