因为种种原因,在现实中存在用人单位为劳动者缴纳本应由劳动者承担的社会保险费,也存在本应由用人单位缴纳的社会保险费却由劳动者承担等情形。在这些情形下,缴费人应如何保护自己的权益?用人单位全额补缴返还争议2008年3月,张某入职某科技公司工作,担任市场部销售人员,双方签订了书面劳动合同,约定月工资为7000元。公司未为其缴纳2008年3月 Because of various reasons, in reality, there are cases where the employer pays the laborer the social insurance premium that should be borne by the laborer, and the social insurance premium that should be paid by the employer is borne by the laborer. In these cases, how to protect their own rights and interests of the contributors? The employer to pay back the full amount of the dispute back In March 2008, Zhang joined a technology company, served as marketing sales force, the two sides signed a written labor contract, the agreed month Wages of 7,000 yuan. The company did not pay for it in March 2008