The Occupational Employment Statistics (OES) survey is a semiannual mail survey measuring occupational employment and wage rates for wage and salary workers in nonfarm establishments, by industry, in the United States. The OES survey is a cooperative program between States and the U.S. Department of Labor's Bureau of Labor Statistics (BLS).
The OES survey uses the Office of Management and Budget (OMB) Standard Occupational Classification (SOC) system. Workers are categorized into 1 of the 770 detailed occupations. Together, these detailed occupations comprise 23 major occupational groups.