What does 着工 mean?
着工 is a Japanese noun meaning “start of (construction) work” in English. It is written as 着工 in kanji, ちゃっこう in hiragana, and chakkou in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
そのビルの建設は来年着工されます。
The construction of the building will be started next year.