Employed persons were to report the occupation at which they worked the most hours during the reference week. The experienced unemployed and persons in the labor reserve were to report their last occupation. In 1960, respondents were asked to describe what kind of work they were doing, for example, 8th grade English teacher, farmer, grocery checker, etc. In 1970, respondents were asked to give this information and, in addition, to specify their most important activities on duties on the job, such as types, cleans building, sells cares, etc., and to indicate their job title. This additional information was requested so that occupation can be coded more accurately.
Information supplied by respondents is assigned an occupation code by clerks.
Tabulations which present the complete range of specific occupations and subcategories are referred to as detailed occupation tabulations. Other tabulations present intermediate levels of classification, combining specific occupations and subcategories into broader groupings. 95.11 Laborers, except farm and mining 95.12 Occupation not reported For 1970, there are 12 major groups instead of 11 as in 1960. A third revision to the major groups relates to the processing of the data. Individuals who did not report an occupation were allocated to a major group through an allocation matrix based on selected demographic and economic characteristics.