thankless task

Definitions

A job or duty that is difficult or unpleasant and for which one receives no appreciation or recognition.

An arduous or unrewarding undertaking that goes unnoticed by others.

Examples

Cleaning the entire house before the party felt like a thankless task when everyone immediately started making a mess.

Trying to please everyone in the office is a thankless task that often leads to burnout.

Synonyms

unrewarding job sisyphian labor uphill struggle ungrateful assignment fruitless endeavor

Antonyms

rewarding experience gratifying work fulfilling project appreciated effort profitable undertaking