I drank on several jobs over the course of about 20 years. If anyone knew, no one said anything about it. It wasn't until my last job, when my office was relocated to an area that was much more visible, that people began to pay closer attention. My frequent tardiness, as well as falling asleep at my desk, became much more conspicuous. Up until then, I could sometimes go an entire week without encountering anyone. After getting caught drunk on the job a second time, at long last, I was finally terminated.