主持人: 我单位在1975年至1981年期间,经劳动部门批准招用了几名农村户口的长期临时工,1995年转为合同制工人。他们从未离开过本单位,1990年参加了养老保险社会统筹,以后又建立了个人帐户。现在有的人已下岗,其中还有从事个体经营的。他们愿意由个人缴纳单位和个人应缴的养老保险费,是否可以?他们的工龄又应该如何计算? Moderator: During the period from 1975 to 1981, my unit approved long-term temporary workers who had hired several rural households through the labor department. In 1995, they were converted to contract workers. They have never left the unit, participated in the pension insurance social co-ordination in 1990, and later established a personal account. Now some people have laid off, of which there are engaged in self-employed. Are they willing to pay for the pension premiums payable by the units and individuals by individuals and whether their length of service should be calculated?