Occupational disease declaration is made every few years.

Occupational hazards are declared once a year.

I. Definition of Occupational Hazards

Occupational hazards refer to the health hazards caused by workers' contact with productive dust, harmful chemicals, physical factors and radioactive substances in their professional activities.

Second, the serious consequences of occupational hazards:

1. Occupational hazards damage the basic rights of workers: safety, health and life (human rights).

2. Occupational hazards are disasters for workers and their families, and become unfavorable factors affecting social security and stability.

3. Occupational hazards have caused huge losses to the national economy, and the annual loss of occupational diseases is nearly 10 billion yuan.

4. Occupational hazards have damaged China's image as a great power in the world and become an excuse for foreign countries to attack China's human rights issues.

Extended data:

The scope of occupational diseases is wider than that of occupational diseases, which has three meanings:

(1) Occupational factors are one of many reasons for the occurrence and development of this disease, but they are not the only direct reasons.

(2) Occupational factors affect health, thus promoting the exposure of potential diseases or aggravating existing diseases;

(3) By improving working conditions, diseases can be controlled or alleviated. Therefore, in occupational health work, such diseases should be listed as an important part of control and prevention to protect and promote the health of occupational population.

Common occupational diseases include behavioral (mental) and physical and mental diseases, such as mental anxiety, depression and neurasthenia syndrome, which are mostly caused by heavy work, night shift work, eating disorders, excessive drinking and smoking. Sometimes due to the fear of certain occupational hazards, mental stress and organ dysfunction are caused.

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