The impact of land reform on the labor intensity of cultivation depends on the operation of two posing forces: the income and substitution effects. The substitution effect will raise the work effort while the income effect will lower it. There are two major forms of tenancy: the share tenancy and the fixed-rent tenancy. Whichever may be the tenancy system before land reform, the income effect will be generated if an income/wealth redistribution objective is incorporated into the land reform program. As regards the substitution effect, it will occur only if land reform is carried out in a framework of share tenancy, as opposed to fixed-rent tenancy. On the assumption that land is distributed free of charge or at reduced prices but is prohibited from resale by land recipients, the labor intensity of cultivation may increase, remain unchanged, or decrease, depending on the relative strength of the income and substitution effects if the land reform is carried out among share-tenants. On the other hand, the labor intensity of cultivation must decrease if such reform is carried out among fixed-rent tenants, because now only an income effect is present. Other things being equal, the output per unit of land will be affected accordingly. However, if the land recipients are charged the full land prices or are allowed to resell their land freely afterwards if the land has been distributed to them without charges or at reduced prices, the tendency towards decreasing labor intensity of cultivation associated with the abolition of fixed-rent tenancy will be averted. And it will assure that the land will be cultivated more intensively than before land reform if the pre-reform tenancy system is that of share tenancy.