The company deducted the personal contribution of social security.

Legal analysis: it is not within the scope of labor arbitration to ask the unit to pay back the social security. You can complain to the labor inspection department, which will order the unit to pay back the social security.

Legal basis: Article 11 of the Regulations of People's Republic of China (PRC) on Labor Supervision, the administrative department of labor security shall supervise the following matters:

(a) the employer's internal labor security rules and regulations;

(two) the situation of the employer and the employee to conclude a labor contract;

(three) the employer's compliance with the prohibition of the use of child labor;

(four) the employer's compliance with the special labor protection provisions for female workers and underage workers;

(five) the employer's compliance with the provisions on working hours and rest and vacation;

(six) the employer to pay the wages of workers and the implementation of the minimum wage standard;

(seven) the employer's participation in various social insurances and payment of social insurance premiums;

(eight) occupation introduction institutions, occupation skill training institutions and occupation skill appraisal institutions shall abide by the provisions of the state on occupation introduction, occupation skill training and occupation skill appraisal;

(nine) other labor security supervision matters stipulated by laws and regulations.