The right to receive payment of mutual aid benefits, etc. is extinguished by prescription if not exercised for five years from the time when it becomes exercisable, and the right to receive payment of premiums and the right to receive a refund of premiums are extinguished by prescription if not exercised for two years from the time when they become exercisable.
共済金等の支給を受ける権利はこれを行使することができる時から五年間、掛金の納付を受ける権利及び掛金の返還を受ける権利はこれらを行使することができる時から二年間行使しないときは、時効によつて消滅する。
Where a surviving family member who has the right to receive payment of mutual aid benefits is unable to request payment of the mutual aid benefits because it is unknown whether a person of a higher rank or of the same rank is alive or dead, or where that person is, the extinctive prescription of that right is not to be completed within six months from the day on which the request became possible.
共済金の支給を受ける権利を有する遺族が先順位者又は同順位者の生死又は所在が不明であるために共済金の支給の請求をすることができない場合には、その請求をすることができることとなつた日から六月以内は、当該権利の消滅時効は、完成しないものとする。
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mutual aid benefit, etc.machine translation
「共済金等」
Mutual aid benefits (共済金) and cancellation refunds (解約手当金).
Short name set inArticle 3, paragraph (5), item (ii)