expression
unable to do one's work; can't get anything done
Used when one cannot work effectively due to distractions, conditions, or personal state. Often implies a lack of productivity or focus.
今日は暑すぎて、仕事にならない。
It's too hot today to get any work done.
隣の工事の音がうるさくて、全然仕事にならない。
The noise from the construction next door is so loud I can't work at all.