Appendix table 2. Number of workers(1) represented, state and local government, National Compensation Survey, 2011 Estimated Occupational group(2) number of workers All workers............................. 18,748,300 Management, professional, and related... 10,348,400 Professional and related.............. 8,785,200 Teachers............................ 4,866,200 Primary, secondary, and special education school teachers......... 3,568,600 Service................................. 3,959,400 Protective service.................... 1,798,600 Sales and office........................ 2,733,400 Office and administrative support..... 2,590,800 Natural resources, construction, and maintenance............................. 952,000 Production, transportation, and material moving.................................. 755,000 1 The number of workers represented by the survey are rounded to the nearest 100. Estimates of the number of workers provide a description of the size and composition of the labor force included in the survey. Estimates are not intended, however, for comparison to other statistical series to measure employment trends or levels. 2 The 2000 Standard Occupational Classification system is used to classify workers.