If you apply for arbitration, you only need to prove the existence of labor relations, and the other burden of proof lies with the employer.

In labor disputes, there is evidence to prove that labor relations are the key, such as work permit or work permit (preferably stamped with official seal), salary card transaction records, salary slips, tooling with company name printed on it, tax payment certificate printed and sealed by local taxation bureau, temporary residence permit, attendance record, social insurance payment record, dispatch sheet, colleague testimony (whether leaving or working), audio and video recording or other written materials with your name and official seal or boss's signature.