2006年6月,孙伟玉来到东风汽车修配厂工作。2007年7月,单位与他签订了五年的劳动合同,劳动合同期限自2007年7月开始执行。也就是从这时起,单位开始为他缴纳社会保险费。在缴费时间问题上,孙伟玉表示了不同意见。他认为,单位给他缴的社会保险费应当从2006年6月份开始,而不是从2007年7月开始。为此,他多次找到单位领导理论,均被拒绝。无奈,他向当地的劳动争 June 2006, Sun Wei Yu Dongfeng Motor repair shop came to work. In July 2007, the unit signed a five-year labor contract with him, and the term of the labor contract has been implemented since July 2007. From then on, the unit began to pay social insurance premiums for him. On the issue of payment time, Sun Weiyu expressed different opinions. In his opinion, the social insurance premiums paid to him by the unit should start in June 2006 instead of starting in July 2007. To this end, he repeatedly found unit leadership theory, were rejected. Helpless, he to the local labor dispute