A Prime Minister was required to hold his post for a certain period of time to be granted the privileges later, and it is assumed that the definition was revised in consideration of the army because the two Prime Ministers, Senjuro HAYASHI and Nobuyuki ABE from the army, had not satisfied the condition (The system that existed in those days in which a person who had for a certain period of time occupied an important post such as a Prime Minister or a Minister of State was granted the same privileges as an incumbent was called "zenkan reigu".).
前官礼遇を受けるには一定期間の在任が必要で、陸軍出身の首相である林銑十郎と阿部信行がその条件を満たしていなかったために、陸軍への配慮から改正されたという（前官礼遇とは首相・国務大臣等の要職を一定期間経験したものに対して現職者に準じる礼遇を賜る当時の制度である）。