Legalising a document using an Apostille
The Finnish authorities may ask you to legalise a foreign document. This should be done in the country where the document was issued.
If the country in question has signed the Hague Convention of 1961, the document can be legalised using an Apostille. For more information about Apostille certificates and the authorities that issue them, visit the Hague Conventions website.
Legalising documents in Japan
Japan has signed the Hague Convention of 1961 and is an Apostille country. Apostille certificates in Japan are issued by the Japanese Foreign Ministry.
If you want to present official Japanese documents to the Finnish authorities, you must have them translated into English, Finnish or Swedish. In this case, both the original document and its translation must be legalised using the Apostille.