Replacement Workers

My automaton hard at work this morning

Is it legal to replace yourself with an automaton? Working from home, you're given some routine tasks to get through such as proofreading a report, or writing a summary of a lengthy dissertation. You're smart enough to write programs that can automate these jobs with such accuracy that its quality is indistinguishable from yours. Would it be immoral to claim your salary for doing this work while you're in fact heliskiing in the New Zealand alps?

There weren't any clauses mentioning automatons in my work contract, so I suspect it's fine.