The word robota means literally "corvée", "serf labor", and figuratively "drudgery" or "hard work" in Czech and also (more general) "work", "labor" in many Slavic languages (e.g.: Bulgarian, Russian, Serbian, Slovak, Polish, Macedonian, Ukrainian, archaic Czech). Traditionally the robota was the work period a serf (corvée) had to give for his lord, typically 6 months of the year. The origin of the word is the Old Church Slavonic (Old Bulgarian) rabota "servitude" ("work" in contemporary Bulgarian and Russian), which in turn comes from the Proto-Indo-European root *orbh-. Robot is cognate with the German root Arbeit (work).
The mechanical devices that perform work are slaves and they will help the Political Elite re-institute a feudal system in which most humans are serfs.