After having been laid up with illness, Hideyoshi specified the system of Go-tairo and Go-bugyo (five elders and five government officers) to make the government system more solid for Hideyori TOYOTOMI, the heir of Hideyoshi, in July (in the old calendar), and appointed Ieyasu to one of the Go-tairo.
慶長3年（1598年）、秀吉は病に倒れると、後継者である豊臣秀頼の体制を磐石にするため、7月に五大老・五奉行の制度を定め、五大老の一人に家康を任命した。