TNR Occupational Taxonomy:

The TNR Occupational Classification is designed to reflect the current occupational structure (Standard Occupation Classification (SOC)) used by Bureau of Labor Statistics in the US. It covers the entire spectrum of occupations of the labor market from private to public and military sectors. The TNR Occupational taxonomy (WOC) is organized in a tiered system of 7 levels: major groups (SOC-2), minor groups (SOC-3), and broad groups (SOC-5), detailed occupations (SOC-6), the O*NET level, the specialization level, and the level of experience.