Conclusion: In the dispute over the victim liability of the labor provider, the principle of "who claims, who provides evidence" shall be followed, and the labor provider and the labor recipient shall provide evidence for their own claims respectively. Legal analysis: According to the principle of "who claims, who provides evidence", the burden of proof of both parties is clear in the dispute over the victim liability of the labor provider. In order to protect their own rights and interests, the service providers need to provide evidence to prove that there is a labor relationship between the two parties, such as labor contracts, wage payment records, work permits, etc; To confirm the fact that they are injured, hospital diagnosis certificate, medical record, disability identification report, etc. can be used; As well as proving that the damage has a causal relationship with labor activities, such as witness testimony, accident report, etc. However, if the recipient wants to reduce or exempt his/her liability, he/she must prove that the provider of labor services has intentional or gross negligence, which leads to damage, such as monitoring video of illegal operations, testimony of others witnessing illegal acts, etc. Therefore, both parties should timely collect and retain relevant evidence to support their own claims. If you have problems with the victim liability dispute of the labor provider, you can consult with professional legal personnel, and I can also provide you with detailed legal assistance.