A reader writes:
I interviewed at a company where I met with 5 different people. Am I supposed to write and send a thank you card to each person I met with, or only the one person who is making the hiring decision and would potentially be my boss?
Well, you don't have to, but it's a nice touch and it'll be noticed. You have the chance to generate this conversation:
Person A: I got a nice thank-you note from Jane Smith.
Person B: So did I! She must have sent them to all of us. I really like that.
That doesn't mean that you will always generate that conversation, but if you have the opportunity to stand out as well-mannered/classy/memorable, why not take it?
That said, job-seekers don't need yet another obligation to stress out over, and if you don't do it, it's not a big deal. And thank-you notes don't get you the job on their own. But they contribute to an overall picture of a candidate, so why not do it?