The Determinants of the Migration of Labor out of Agriculture in the United States, 1940–85
用两部门职业选择模型分析美国农业劳动力流出，发现农业劳动力对农业与非农劳动回报差异敏感，因此提高农业收入的政策会影响农业就业水平。
Abstract The flow of labor out of production agriculture is analyzed using a two‐sector model of occupational choice. A migration equation is specified and tested empirically using aggregate data for the United States. The economic determinants of the migration of all farm workers and farm operators are established. Farm labor is found to be responsive to changes in the returns to agricultural labor relative to nonfarm labor returns. Given this responsiveness, policies intended to increase farm income will affect the level of agricultural employment.