plasterer
A tradesperson who applies plaster, mortar, or stucco to walls and ceilings. The reading しゃかん is less common.
He is a skilled plasterer.
A plasterer's job is to plaster walls.
Standard kanji spelling for the occupation.
The term 左官 is said to derive from the official title 左官 (sakan) in the ancient Ritsuryō system, but the exact connection to the modern trade is uncertain.