If only he had enough hours in a day. That’s the most challenging part of Adam Glassman‘s gig as creative director of O Magazine, a post where he’s constantly navigating the worlds of graphic design and fashion.

And, of course, working for Oprah means that you’ll always have more interested candidates than open positions to fill. In the latest installment of Mediabistro’s So What Do You Do? series, Glassman discusses the one thing that applicants do to sully their chances.

“First of all, I think everyone should do their homework. You need to know who you’re interviewing with — not just the human being, but also the publication,” he said. “And I can tell you numerous times people have come in and they’ve never picked up an issue of O Magazine. And I have to tell you something: that doesn’t fly. There are so few jobs out there right now for young people, and there are a lot of people looking for a job. The moment you say that to me, the interview is over, basically, in my mind.”

For more, read So What Do You Do, Adam Glassman, Creative Director at O Magazine?