How Do I Tell My Boss I'm Looking For Another Job?

Dear Experts, I am going to be interviewing for a job next week, but obviously the job's not in the bag yet. But I was wondering how soon I should let my current boss know, or even IF I should tell him I'm interviewing for a new job. I know the customary 2 weeks notice happens after you've got the the job, but should I let him know that he might have to start looking for someone new? How do I tell my boss I'm looking for another job? In this economy - and as I'm a journalism major working part time at my hometown newspaper - he knows the job he gave me is pretty temporary while I look for something more permanent, but it has been an invaluable job and I don't want to disrespect him by telling him I'm leaving in two weeks. Here is how our CAREEREALISM-Approved Experts answered this question on Twitter:Q#377 Don't tell yet. Wait for offer. Boss will understand. PT = Person Temporary. He knows it's coming. (@jtodonnell) Q#377 Do not disclose u r looking - period. Give extra week's notice if u are inclined & able. The search is confidential. (@DebraWheatman) Q#377 The more notice you can give, the better, since it sounds like you have a good relationship. Good luck! (@beneubanks) Q#377 Agree with @dawnbugni. Keep it to yourself until you're ready to leave. (@louise_fletcher) Q#377 Don't tell him until you have accepted the job or have an iron-clad offer. It could jeopardize your current job. (@gradversity) Q#377 Rule is only give notice WHEN you have start date for new job. 2 ease transition, u can offer 2 train. (@juliaerickson) Q#377 If u tell boss yr looking he must look 4 yr replacement - that's good mgmt. If replacement comes b4 new job, u lose. (@robtaub) Q#377 Do NOT show your hand before you're ready to play it. Entire dynamic changes and could have negative impact on you. (@DawnBugni) Our Twitter Advice Project (T.A.P.) is no longer an active campaign. To find an answer to the above question, please use the "Search" box in the right-hand column of this website.