Once upon a time, early in my career, I spent half a day automating and error-proofing a 15 minute task. My boss, at the time, was slightly annoyed, and slightly amused. Fast forward two months from that point, and that same task needs to be done not once, but several thousand times. My boss wanted to go get coffee before we got started, so while he was grabbing his wallet, I fired up my automated process. By the time we got back, the task was done, and the boss was annoyed at himself for being annoyed earlier, and never again questioned why I built the systems I did. I, unfortunately, was too young and too inexperienced to realize that he was an excellent boss, and left a couple years later for "greener pastures", where I encountered many "productivity is measured entirely by the time you sit at your desk" bosses.
TL;DR: I work hard to look this lazy, had a boss that recognized it, and was too dumb to realize how good I had it.