随着城市与农村经济体制的改革，市场经济的不断发展和完善，农村多余和闲散劳力进城打工的愈来愈多，以及城镇待业青年和退岗人员临时打工者也不断增加。他们的身体素质差，没有劳动卫生知识，缺乏安全生产观念。而用工单位为了提高企业经济效益，节省劳动保护开支及减少... With the reform of urban and rural economic systems and the constant development and improvement of market economy, more and more migrant workers work in cities in urban areas, as well as temporary unemployed young people and temporary workers in cities and towns have also been on the increase. Their poor health, lack of labor and health knowledge, the lack of safety concepts. The labor unit in order to improve the economic efficiency of enterprises, saving labor protection expenses and reduce ...