The following post is courtesy of the Recruiting Blogswap:
If you asked your parents how to write a resume, they would probably tell you to list every job you’d ever had, and then detail everything you’d done at those jobs. Twenty-five years ago, when people mailed their typed resumes to the person to whom they’d be reporting, that was sound advice. In today’s market, wasting space on your resume with irrelevant information is a quick way to land it in the rejection pile.
If you’ve been in the workforce for a while, chances are good that you’ve had at least one job that wasn’t relevant to your overall career path. For instance, someone looking to hire you for corporate communications really won’t be interested in the job you had serving milkshakes at the Dairy Queen. So don’t waste space on your resume talking about it.