The workers engaged in specific occupations or exposure to specific occupational hazards, than the general occupational population is more likely to suffer from occupational hazards and occupational diseases or may lead to aggravation of the original disease, or in the course of the operation induced by the disease may lead to the life and health of others constitute a danger to the individual's special physiological or pathological state.

The correct term is occupational contraindication, and occupational contraindication is incorrectly written.

With one of the following conditions, can be judged as an occupational contraindication:

1) some diseases, special pathology or physiological state leads to exposure to specific occupational disease hazards are more easily absorbed (and thus increase the internal dose) or the specific occupational disease hazards susceptible, more likely to occur the occupational disease caused by this kind of occupational disease hazards;

2) some diseases, special pathology or physiological state exposure to specific occupational disease hazards can make workers' existing diseases worse;

3) certain diseases, special pathologies or physiological state exposure to specific occupational disease hazards can induce the occurrence of potential diseases;

4) certain diseases, special pathologies or physiological state exposure to specific occupational disease hazards can affect the health of the offspring;

5) Certain diseases, special pathology or physiological state into special jobs will pose a danger to the life and health of others;

6) based on the nature of the poison and the classification of occupational disease hazards, combined with the above determination of the conditions for the determination of occupational contraindications.