This one hadn't happened in long enough it had become a non-issue... but it reared its ugly head again yesterday.
We've got a younger guy working for us - he started while he was still in college, working during the summers. Ended up changing his major and going to school an extra year and a half to get a degree related to what we do (when he started, it was just a summer job for him. He decided he wanted to make a career of it) Hard worker, everyone was impressed with him, he had no problem getting hired on full-time with us after graduation. Then we started noticing that frequently on Thursday mornings, he'd call in sick - either for the morning or the whole day, claiming back pain. But...it only seemed to be during the summer Wednesday night golf league season. And then that winter, it moved to Friday mornings...and Thursday night dart league. There would be days you could smell the booze leaking out of his pores. His boss was getting quite fed up with scheduling a 9:00 AM meeting on-site with a client for a survey, and Tim either calling in sick, or showing up smelling like booze, so he got a little talking-to about professional image and reliability. Things got better for quite a while - it had been probably a year since he pulled a no-show or had any other problems.
And then yesterday came. He walked through the door right at 8:00, so that wasn't a problem. And you couldn't really notice it at first, but his desk is next to mine, with a 4.5' partition wall between us. By 1:00, I could pick up a faint aroma, and by 3:00 I might as well have had a bar rag lying on my desk next to me.
Obviously, I'm not against having a couple here and there - or even tying one on pretty hard. But when you show up to work - in a professional office, where your job requires you to interact with clients almost daily - smelling like you slept at the bar...you've got a problem, and need to seek help. Fast.