According to Article 18 of the Regulations on Work Injury Insurance, the following materials shall be submitted when applying for recognition of work injury:
 （1） Application form for identification of work-related injury;
 （2） Materials proving the existence of labor relationship (including factual labor relationship) with the employer;
 （3） Medical diagnosis certificate or occupational disease diagnosis certificate (or occupational disease diagnosis appraisal certificate).
 The application form for determination of work-related injury shall include the basic information such as the time, place, cause of the accident and the degree of injury of employees.
 If the materials provided by the applicant for the determination of work-related injury are incomplete, the social insurance administrative department shall notify the applicant of all the materials that need to be supplemented and corrected in writing at one time. The social insurance administrative department shall accept the application after the applicant has supplemented and corrected the materials as required by the written notice.