If the employer has not signed a labor contract with the employee, it may refer to the following documents when determining that there is a labor relationship between the two parties:

(a) payment vouchers or records (payroll), the payment of various social insurance premiums;

(2) Work Permit, Service Certificate and other documents that can prove the identity issued by the employer to the employee;

(3) Employment records such as Registration Form and Application Form filled out by employees;

(4) attendance records;

(5) Testimonies of other workers, etc. Therefore, workers or labor and social security departments can prove or identify from the above aspects.

In judicial practice, you can also use documents and recorded evidence of company business dealings to prove labor relations.