Is the length of service determined only by social security?

The length of service is not only determined by social security.

1. Any materials that can prove that employees mainly rely on wage income can be used as the basis for determining the length of service, not just the proof of social security payment. Even if there is no labor contract, only the social security payment certificate can prove the length of service.

2. Length of service identification refers to the official records and certificates of employees' working hours. The length of service is divided into general length of service and the length of service of the enterprise. General length of service refers to the total working time of employees engaged in production and work, including the length of service of the enterprise. The length of service of this enterprise refers to the time that employees work continuously in an enterprise unit. Length of service is the official record and proof of employees' working hours, and it is the working hours in which employees take wage income as their whole or main source of livelihood.