You can't. According to the Regulations on Hygiene Management in Public Places, the health certificate is based on the Food Safety Law and other laws and regulations. Relevant personnel in five major industries, such as food production and operation, public service, cosmetics, disposable medical and health products, toxic and hazardous and radioactive operations, and child care institutions, must hold health certificates. Because he didn't leave his job, if the relevant unit comes to check without a health certificate, he will be subject to administrative punishment. The main diseases involved in health examination are dysentery, typhoid fever, active tuberculosis, infectious skin diseases and other infectious diseases.