"Engishiki" (an ancient book for codes and procedures on national rites and prayers) provides for 372 Kajitsube under Mokuryo (Bureau of Carpentry), 166 Shiko under Samaryo, 127 Shiko under Umaryo, and 310 Zokuko under Hyogoryo (Bureau of Military Storehouses), which are believed in fact to have been in the peasant class supported by government offices.
『延喜式』には木工寮に鍛治戸372戸、左馬寮に飼戸166戸、右馬寮に同127戸、兵庫寮に雑工戸310戸が規定されているが、実際には官司の資養を受けた農民層であったと見られている。