Migration of Seasonal Agricultural Workers
研究发现，季节性农场工人中近半数每年迁移至少75英里，预期收入差异对迁移的诱导作用较弱，10%的收入差异仅使迁移概率提高略超1%，表明迁移成本高，雇主需提供高收入溢价才能吸引工人。
Abstract Nearly half of all seasonal farm workers migrate at least 75 miles in a given year. An expected earnings differential from migration weakly induces migration: a 10% earnings differential raises the probability of migrating by slightly more than 1%. This result indicates that there are substantial costs to migrating and that employers must offer large earnings premia to induce a substantial number of workers to move to their jobs. Some demographic groups earn substantially higher earnings by migrating. These higher earnings from migration are primarily due to higher wages rather than more hours of work.