noun
the three major duties (education, work, and payment of taxes)
A fixed legal and social concept in Japan, referring to the three fundamental civic obligations under the Constitution: the duty to educate children, the duty to work, and the duty to pay taxes.
日本国憲法では、国民の三大義務として教育、勤労、納税が定められている。
The Constitution of Japan stipulates education, work, and payment of taxes as the three major duties of the people.
Compound of 三大 (three major) + 義務 (duty). The term is a fixed expression derived from the Japanese Constitution.