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Accessibility Information U.S. Department of Labor 2001

Chapter 3:
Economic change and structures of classification

Message from the Secretary of Labor
Chapter 1
Chapter 2
Chapter 3
Appendix: Statistical Tables
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Industry classification 95
spacing layoutThe Standard Industrial Classification System 97
spacing layoutThe North American Industry Classification System 99
Occupational classifications 101
spacing layoutPurpose and value 101
spacing layoutWhy classify occupations? 102
spacing layoutThe early census approach 105
spacing layoutThe revised census approach era 105
spacing layoutA period of transition 106
spacing layoutResponse of the classification system to new products, spacing layout technologies, and other changes 107
spacing layoutThe Occupational Employment Survey 109
spacing layoutPatterns of change in the OES and SOC occupational spacing layoutclassification systems 110
Future directions 111

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Last Updated: August 30, 2001