The assumption that imports carry moral hazards, and that tax, trade, tariff measures should compensate for harms done, is shared by advocates of fair trade whose programs address, in addition, more overt social justice concerns of human beings, such as the maintenance of the "human capital" of a region. Both initiatives are alternatives to free trade, which has no such controls, and generally permits and encourages free transit in goods (but not, in general, labour) across ecological and social borders.