Legal analysis: go to the personnel department of the unit to explain the situation and ask the relevant staff to issue a certificate of working years, indicating the employee's name, gender, contact information and other identity information; The position of the employee; Working years; The intention of the unit to testify for it; And the seal, date and other contents of the unit. Or go to the social security bureau to open a record of the unit paying social security payments for workers to prove the working years. Such as employment registration form, social security payment record, salary payment record, employee handbook, certificate of termination of labor contract, surrender record, labor contract, etc. If the employee is retained, the working years of the employee can be proved according to law. My working years are based on the accumulated time of formal work, generally including internship time, but excluding the time of unemployment between two discontinuous jobs, or the time when I actually did not take part in the work, such as leaving my job without pay, being absent from work for a long time for some reason, etc.

Legal basis: Article 38 of the revised draft of the Detailed Rules for the Implementation of the Labor Insurance Regulations of People's Republic of China (PRC) refers to the working hours when employees take wage income as their whole or main source of livelihood. When calculating the general length of service, it should include the length of service of the enterprise.

Article 17 of the Labor Contract Law of People's Republic of China (PRC) shall have the following provisions: (1) the name, domicile and legal representative or principal responsible person of the employing unit; (2) The name and address of the laborer and the number of the resident identity card or other valid identity documents; (3) The term of the labor contract; (4) Work content and work place; (five) working hours and rest and vacation; (6) Labor remuneration; (7) Social insurance; (eight) labor protection, working conditions and occupational hazard protection; (nine) other matters that should be included in the labor contract as stipulated by laws and regulations.