Answered by Marisella, Hiring Expert at American Express, on Tuesday, September 1, 2015
If you are interviewing for an internal position, it's always good to sit down with your current leader and discuss your interest for a new role. Having these discussions are typically standard if you're applying for an internal role. However, if you're interviewing at completly different company, I would advise for you to make that call depending on the situation. If you're interviewing at different places because you're not sure about your career path or lacking certain learning opportunities, it may be wise to sit down with your leader and have an open discussion around this. If you're interviewing at different organizations for reasons that are out of your control and wont change, then I would keep it confidential. You're not obligated to tell your current employer you're interviewing, but you should discuss it with them once you recieve a formal offer letter and have decided to proceed with the necessary onboarding processes.