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Jyutping gung1 zok3 zai3
Pinyin gōng zuò zhì

Definitions (Wiktionary)
  1. noun
    working hour system
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    很多公司实行8小时工作制。
    很多公司實行8小時工作制。
    hěn duō gōng sī shí xíng 8 xiǎo shí gōng zuò zhì 。
    • Lots of companies have implemented an eight-hour working day.