Good grammar won’t get you a job but bad grammar can prevent you from getting a job. That was certainly my attitude as a hiring manager and many of my colleagues hold similar opinions. We take grammar to be a marker of many other characteristics like intelligence, curiosity, and creativity. If you don’t know (or don’t care) about the difference between your and you’re then we have to wonder, what else don’t you know or care about? Good grammar is fundamental to good communication and good communication is fundamental to business success.
I just found an article by Kyle Wiens that makes this case better than I ever have. It’s posted on the Harvard Business Review Blog (HBR Blog) and titled, “I Won’t Hire People Who Use Poor Grammar. Here’s Why.” You can find it here.