Chinese farm families under the Household Responsibility System have t
he land use-rights but not the rights of alienation. If permanently le
aving agriculture, they have to return the land to local authorities a
nd consequently give up a stream of future land earnings. This paper a
nalyzes the deterrent effect of this land arrangement on labor mobilit
y by constructing a household model which considers both part-time far
ming and permanent migration decisions. The implications of the model
are consistent with the recent Chinese experience of rural floating po
pulation in cities and the rapid growth of rural nonagricultural emplo
yment.