You can apply to the Human Resources and Social Security Bureau for work-related injury identification within 1 year from the date of the accident injury. Materials to be provided: work-related injury identification application form, labor contract, medical diagnosis certificate and other materials.

Legal basis: Regulations on Industrial Injury Insurance

Article 17 If an employee is injured by an accident or is diagnosed and identified as an occupational disease according to the provisions of the Law on the Prevention and Control of Occupational Diseases, the unit to which he belongs shall, within 30 days from the date of the accident injury or the date of the diagnosis and identification as an occupational disease, apply to the social insurance administrative department in the overall planning area for work-related injury identification. Under special circumstances, with the consent of the administrative department of social insurance, the application time limit may be appropriately extended.

If the employing unit fails to apply for work-related injury identification in accordance with the provisions of the preceding paragraph, the employees with work-related injuries or their close relatives and trade unions may directly apply for work-related injury identification to the social insurance administrative department where the employing unit is located within 1 year from the date of the accident injury or the date of being diagnosed as an occupational disease.

In accordance with the provisions of the first paragraph of this article, matters that should be identified by the provincial social insurance administrative department shall be handled by the municipal social insurance administrative department located in the district where the employer is located in accordance with the principle of territoriality.

If the employer fails to file an application for work-related injury identification within the time limit specified in the first paragraph of this article, the employer shall bear the relevant expenses such as work-related injury treatment in accordance with the provisions of these regulations during this period.

Eighteenth applications for work-related injury identification shall submit the following materials:

(a) the application form for work-related injury identification;

(two) the existence of labor relations with the employer (including factual labor relations);

(3) Medical diagnosis certificate or occupational disease diagnosis certificate (or occupational disease diagnosis certificate).