P-20 What has [the respondent] mainly been doing since 1989?
P - 23: Industry
35. The industry identifies the type of product or service produced by the worker and his fellow workers, as distinct from the worker's own activity (which is his occupation). For each worker write under the industry column the name of the industry in which he worked during the reference period. If he was employed in more than one industry then enter the industry which relates to the occupation already recorded under P 22 (Occupation column). If he had the same occupation in different industries then write the current industry in which he worked.
36. A person with a certain skill can work in any industry where his skills are required. His industry classification will depend upon the industry in which he is actually employed.
37. Many enterprises have several functions and in such a case, the industry should relate to the functions of the establishment where the respondent is closely associated.
38. Write the category of industry with which a person is most associated during the reference period.
39. Some difficulty may be experienced in identifying the industry of persons who move frequently from job to job or do odd jobs. Remember that what is wanted is the industry of the current job, even if that job started only a day or two ago.
40. There is no industry called "Service". For example someone working as a teacher/lecturer is in education industry. He is providing service, but the industry is not service. A trained soldier employed as a security guard at Zambia Breweries is not in security services but working in a 'Brewing Industry'. But someone employed by a security company e.g. Anderson security, assigned to guard Zambia Breweries, is in 'Security Services'
See Appendix 7 for a list of industries on page 103.