一、农民工保障政策局限性的直接原因。1.农民工高流动性与社会统筹程度低。由于农民工受教育程度比较低,往往多从事体力和技术含量要求不高的职业,劳动力供给充裕,竞争激烈,大多工作周期都很短,农民工表现出了极大的流动性。现阶段推行的养老保险基金区域统筹与农民工跨省区流 First, the direct reason for the limitations of migrant workers' security policies. 1. High mobility of migrant workers and social co-ordination low. Since migrant workers are relatively poorly educated, they tend to engage in more demanding jobs with less physical and technical content. Labor supply is abundant and highly competitive. Most of them have short working cycles and migrant workers have shown great liquidity. The current implementation of the pension fund regional co-ordination and migration of migrant workers across provinces and autonomous regions