That is, there are 8 categories, 83 subcategories, 284 subcategories, and 1 506 occupations, with a total of 1 886,5438+0 listed occupations. Among them, eight categories are: ① experts, technicians and related workers; (2) government officials and business managers; (3) trading workers and related workers; 4 sales personnel; ⑤ service personnel; 6. Workers, fishermen and hunters in agriculture, animal husbandry and forestry; ⑦ Production and related workers, transport equipment operators and laborers; (8) Workers who cannot be classified by occupation. This classification method is convenient to improve the comparability and international exchange of international occupational statistics. The second is the classification of the Canadian dictionary of job classification. It divides the main industries in the national economy into 23 categories, 8/kloc-0 subcategories, 489 subcategories and more than 7,200 occupations. This classification has a definition for each occupation, which explains the content of each occupation one by one and the requirements for employees in general education, vocational training, ability tendency, interest, personality, physique and so on, and has great reference value.