The compensation for lost time refers to the actual reduced income of the victim who is unable to work normally during the period from injury to complete cure that the compensation obligor should pay to the compensation obligee. As far as the time limit for missed work is concerned, the most common one is to be determined by the expert opinion issued by the judicial appraisal institution; If there is no judicial expertise, the medical diagnosis certificate issued by the hospital where the plaintiff received treatment can also be selected for determination. With regard to the proof of salary income before the accident, the work certificate, labor contract, social security certificate, bank statement, payroll, personal tax payment certificate and business license of individual industrial and commercial households issued by common employers.