From Kyle Wiens, writing for the Harvard Business Review:
Everyone who applies for a position at either of my companies, iFixit or Dozuki, takes a mandatory grammar test. Extenuating circumstances aside (dyslexia, English language learners, etc.), if job hopefuls can’t distinguish between “to” and “too,” their applications go into the bin.
Of course, we write for a living. iFixit.com is the world’s largest online repair manual, and Dozuki helps companies write their own technical documentation, like paperless work instructions and step-by-step user manuals. So, it makes sense that we’ve made a preemptive strike against groan-worthy grammar errors.
But grammar is relevant for all companies. Yes, language is constantly changing, but that doesn’t make grammar unimportant. Good grammar is credibility, especially on the internet. In blog posts, on Facebook statuses, in e-mails, and on company websites, your words are all you have. They are a projection of you in your physical absence. And, for better or worse, people judge you if you can’t tell the difference between their, there, and they’re.
Good grammar makes good business sense — and not just when it comes to hiring writers. Writing isn’t in the official job description of most people in our office. Still, we give our grammar test to everybody, including our salespeople, our operations staff, and our programmers.
The moral is simple: pay attention to your grammar.