Proposed Category System for 1960-2000 Census Occupations

This paper proposes a detailed, consistent category system for occupations in the Census of Population data from 1960 to 2000. Most of the categories are based on the 1990 Census occupation definitions. We analyze employment levels, average earnings levels, and earnings variance in our occupation categories over time, compare these to similar trends for occupations defined in the occ1950 IPUMS classification, and test both classifications for consistency over time.