わかる!著作権

Works not Subject of Copyright

I see a lot of constitutions and laws being quoted in textbooks, but are those not violating any laws?
I don’t know
It’s needed for education, so it may be alright.
Maybe
Under article 13 of the copyright act, works such as the Constitution and other laws and regulations, notifications, instructions, circular notices, and other similar materials issued by a national or local government agency, an independent administrative agency or a local independent administrative agency, and judgments, decisions, orders, and decrees of the courts, as well as rulings and decisions made by administrative agencies in proceedings of a quasi-judicial nature are explained as works that are not subject to the copyright act. Meaning that in Japan, you do not need to worry about copyright when talking about laws or constitutions.
(Works not subject to copyright)
Article 13 The following works are not subject to the rights provided for in this Chapter:
(i) the Constitution and other laws and regulations;
(ii) notifications, instructions, circular notices, and other similar materials issued by a national or local government agency, an independent administrative agency (meaning an incorporated administrative agencyprovided for in Article 2, paragraph (1) of the Act on General Rules for Independent Administrative Agencies (Act No. 103 of 1999); the same applies hereinafter), or a local independent administrative agency (meaning a local incorporated administrative agency provided for in Article 2, paragraph (1) of the Local Independent Administrative Agencies Act (Act No. 118 of 2003); the same applies hereinafter);
(iii) judgments, decisions, orders, and decrees of the courts, as well as rulings and decisions made by administrative agencies in proceedings of a quasi-judicial nature;
(iv) translations and compilations of the materials listed in the preceding three items, which are made by a national or local government agency, independent administrative agency, or local independent administrative agency.