neglecting duties while drawing pay; holding a sinecure
A rare, literary yojijukugo describing a person who holds an official position but does no real work while still receiving a salary. It carries a strong negative connotation of idleness and corruption.
尸位素餐 is a four-character idiom that criticizes someone who holds a position but does no work worthy of it, merely drawing a salary.
役人天国 is a more colloquial term for a cushy bureaucratic job, while 尸位素餐 is a formal, classical idiom with a stronger moral condemnation.
無為徒食 means living idly without contributing, but does not specifically imply holding an official post, unlike 尸位素餐.
A yojijukugo of Chinese origin, from the classical text 'Book of Han' (漢書). The literal meaning is 'to occupy a position like a corpse and eat without working,' metaphorically describing a useless official.