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job celebration gift; employment congratulation gift
a gift given to celebrate someone starting their first job or career
I'm thinking about what to give my younger brother for his job celebration gift.
Cultural note
Given when someone receives a job offer (内定) or starts their first job, typically in March-April when new graduates enter the workforce.
In Japan, starting one's career is a major life milestone. 就職祝い often includes practical items for the workplace.