yes.

1. The key is to determine the existence of labor relations between the two parties; 2. The employer has not signed a labor contract with the employee, and can refer to the following documents when determining that there is a labor relationship between the two parties: (1) wage payment vouchers or records (payroll roster for employees) and records of paying various social insurance premiums; (2) The "work permit", "service certificate" and other documents that can prove the identity issued by the employer to the workers; (3) Employment records such as "Registration Form" and "Application Form" filled out by the employee; (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 the company's business dealings to prove labor relations.