案例:崔某于2005年1月起在某国有酒店有限公司(简称甲公司)任职,签订了为期6年的书面劳动合同,并办理了劳动合同公证。2010年1月甲公司出资成立一家旅游度假公司(简称乙公司),并在人员分配时,于2010年2月份将崔某安排到乙公司工作。崔某未与乙公司签订新的劳动合同,其人事档案及社保、医保关系均还在甲公司。同年8月份乙公司要求与崔某重新签订为期3年的书面劳动合同, Case: Cui served in a State-owned Hotel Co., Ltd. (A company for short) since January 2005 and signed a 6-year written labor contract and handled the labor contract notarization. In January 2010, Company A funded the establishment of a travel and vacation company (hereinafter referred to as Company B). In the distribution of personnel, Cui Mou was arranged to work in Company B in February 2010. Choi did not sign a new labor contract with Company B, whose personnel files, social security and medical insurance relationships are still in Company A. In August of the same year, Company B requested to re-sign a 3-year written labor contract with Cui Mou,