“occupation / business” in Japanese is 業, read gyou, gou, waza (ぎょう, ごう, わざ). It is a Grade 3 Kyōiku kanji, taught in year 3 of Japanese elementary school, and appears in words such as 工業 (industry).
What does 業 mean?
授業が終わる。
Same sound, different character — the classic trap. Compare them side by side: