 A survey by Resume Builder found that 40% of companies posted fake job listings this year. They have a special name, ghost jobs. Companies post them for various reasons. To stash resumes for future openings, give current employees a kick in the butt, or make it look like they're thriving to competitors, investors, and the public. It's just a tactic. There are clues that you are looking at a ghost job online, though. For starters, the same job is posted over and over again. Real positions get filled in a reasonable time frame.