Legal basis: Article 2 of the Measures for the Administration of Preventive Health Examination refers to the health examination before, during and during the employment of personnel engaged in the production and operation of food and drinking water, personnel directly engaged in the production of cosmetics, personnel who directly serve customers in public places, hazardous workers, radiation workers and school students according to relevant national health laws and regulations. Fourteenth health supervision institutions shall, according to the results of health examination, issue health certificates to those who pass the preventive health examination. Put forward opinions on handling unqualified personnel and supervise their implementation. The original materials shall be submitted to the inspected unit or the designated filing unit for filing.