In Japan, the childcare leave law only covers employed “workers,” which excludes Diet lawmakers from an official childcare leave system. It’s the first time a Cabinet minister has announced and followed through with paternity leave. With no precedents to follow, Koizumi admitted he was somewhat confused about how to go about taking paternity leave, but added that “the system will not change unless the number of male public servants taking leave increases.”
Source: https://www.japantimes.co.jp/