Class A: Physical examination of employees in catering industry, food factory, canteen, water plant and water dispenser factory.

Class B: Physical examination of employees in tourism, culture and entertainment, beauty salons, shopping malls, cosmetics factories and health centers.

Class C: Physical examination of general occupational recruitment in general factories and enterprises.

Class D: Physical examination of electricians, elevator workers, boiler workers and other high-temperature aerial workers.

According to the Food Safety Law, Regulations on Hygiene Management in Public Places and other laws and regulations, relevant personnel engaged in food production and management, public service, professional production of cosmetics, disposable medical and health care products, toxic and hazardous and radioactive operations, and child care institutions must hold health certificates.

The main diseases involved in health examination are dysentery, typhoid fever, active tuberculosis, dermatosis (infectious) and other infectious diseases. If you find these diseases, don't engage in hairdressing and beauty, direct contact with imported food, public toilets and other work that directly serves customers. You can only work if you are cured.

Extended data:

Some misunderstandings of health certificate;

First, holding a "health certificate" indicates good health. The health certificate stipulates that the holder shall have a health examination once a year. People are mobile, but the examination of health certificates is relatively static. Some licensees are infected with diseases after the exam, but they still hold qualified health certificates before the next exam.

Many diseases are hidden and latent, and carriers themselves do not feel symptoms; Some people are afraid that failing the examination will mean that they are laid off and have no food, so they have to deliberately avoid hiding it, resulting in patients or carriers with health certificates continuing to work. In fact, there are many examples of unemployment in non-service industries due to the abuse of health certificates.

Second, applying for a health certificate is only beneficial to the parties concerned. For a considerable number of staff, it is both costly and troublesome, and there is also the risk of unemployment.

In fact, the content of health certificate mainly involves the inspection of infectious diseases, in order to ensure the health and safety of the service industry. Personnel engaged in toxic, harmful and radioactive operations do not belong to the service industry and do not need to hold health certificates at all, so it cannot be said that health certificates are an effective way to understand physical condition and ensure health and safety.

Reference: Baidu Encyclopedia-Health Certificate