the.com/thanklessness
The art of doing everything right and being noticed for none of it.
means The quality of work or effort that goes unappreciated, unrewarded, and conspicuously unthanked.
from From Old English thanc, meaning a grateful thought, fused with -less, the suffix of absence — literally the state of being without grateful thoughts coming your way.
Job hazardJanitors, parents, and IT all know it well.
Word ageThankless predates Shakespeare, who used it freely.
Hidden laborBest work is often the least noticed work.