Orderlies
Concept · Stellaris 4.5.2
Orderlies in the Stellaris encyclopedia: Orderlies increase … Output and produce Amenities
Orderlies in the game's words
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Orderlies increase … Output and produce 
Amenities
These workers are responsible for the day-to-day care of those subjected to experimental procedures that often render them unable to care for themselves.
Source: common/game_concepts (concept_slave_orderly) and localisation/english, Stellaris Cygnus v4.5.2 (9776).