From 《汉书·朱云传》: Zhu Yun attacks the court, saying grand ministers 'can neither steer the ruler nor benefit the people - they merely occupy their posts and eat their rations' (尸位素餐).
usage
尸位 = occupying a post like a corpse in a ritual seat; 素餐 = eating a meal without working for it. Harsh, formal register - used in editorials and official criticism.
