sinecure; cushy job; do-nothing post
Refers to a position with little actual work or responsibility, often implying a comfortable but unproductive role. Can carry a slightly negative or ironic tone.
He was pushed into a do-nothing job at the company.
After retirement, he took a sinecure position called 'advisor'.
閑職 is an easy, low-responsibility post (a sinecure), the opposite of the demanding, influential 要職.
Compound of 閑 (kan, 'leisure, quiet') and 職 (shoku, 'job, occupation'). The exact historical derivation is uncertain, but the meaning follows directly from the kanji components.