Ryoko were engaged in the protection of the mausoleums of emperors and imperial family members; kanko and kunuhi in the cultivation of government-owned land; and kenin and shinuhi in the performance of chores for private households.
陵戸は天皇や皇族の陵墓の守衛、官戸と官奴婢は官田の耕作、家人と私奴婢は私家の雑用に従事した。