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Table 10. The 30 occupations with the largest projected number of total job openings due to growth and replacements, 2010-20 (In thousands) Occupation Occupational group Employment Change Replacement Total job Pre-employment During employment 2010 2020 Number Percent needs openings due Typical education needed Work experience Typical on-the-job training(4) to growth and for entry(2) in a related replacements(1) occupation(3) Retail Salespersons Sales and Related Occupations 4,261.6 4,968.4 706.8 16.6 1,251.9 1,958.7 Less than high school None Short-term on-the-job training Cashiers Sales and Related Occupations 3,362.6 3,612.8 250.2 7.4 1,525.7 1,775.9 Less than high school None Short-term on-the-job training Waiters and Waitresses Food Preparation and Serving Related Occupations 2,260.3 2,456.2 195.9 8.7 1,128.4 1,324.3 Less than high school None Short-term on-the-job training Registered Nurses Healthcare Practitioners and Technical Occupations 2,737.4 3,449.3 711.9 26.0 495.5 1,207.4 Associate's degree None None Combined Food Preparation and Serving Workers, Including Fast Food Food Preparation and Serving Related Occupations 2,682.1 3,080.1 398.0 14.8 748.5 1,146.5 Less than high school None Short-term on-the-job training Office Clerks, General Office and Administrative Support Occupations 2,950.7 3,440.2 489.5 16.6 522.0 1,011.5 High school diploma or equivalent None Short-term on-the-job training Laborers and Freight, Stock, and Material Movers, Hand Transportation and Material Moving Occupations 2,068.2 2,387.3 319.1 15.4 661.1 980.2 Less than high school None Short-term on-the-job training Customer Service Representatives Office and Administrative Support Occupations 2,187.3 2,525.6 338.4 15.5 621.2 959.6 High school diploma or equivalent None Short-term on-the-job training Home Health Aides Healthcare Support Occupations 1,017.7 1,723.9 706.3 69.4 131.2 837.5 Less than high school None Short-term on-the-job training Janitors and Cleaners, Except Maids and Housekeeping Cleaners Building and Grounds Cleaning and Maintenance Occupations 2,310.4 2,556.8 246.4 10.7 435.6 682.0 Less than high school None Short-term on-the-job training Personal Care Aides Personal Care and Service Occupations 861.0 1,468.0 607.0 70.5 68.2 675.2 Less than high school None Short-term on-the-job training Childcare Workers Personal Care and Service Occupations 1,282.3 1,544.3 262.0 20.4 403.8 665.8 High school diploma or equivalent None Short-term on-the-job training Heavy and Tractor-Trailer Truck Drivers Transportation and Material Moving Occupations 1,604.8 1,934.9 330.1 20.6 319.3 649.4 High school diploma or equivalent 1 to 5 year Short-term on-the-job training Postsecondary Teachers Education, Training, and Library Occupations 1,756.0 2,061.7 305.7 17.4 280.4 586.1 Doctoral or professional degree None None First-Line Supervisors of Office and Administrative Support Workers Office and Administrative Support Occupations 1,424.4 1,627.8 203.4 14.3 381.0 584.4 High school diploma or equivalent 1 to 5 year None Elementary School Teachers, Except Special Education Education, Training, and Library Occupations 1,476.5 1,725.3 248.8 16.8 324.4 573.2 Bachelor's degree None Internship/residency Receptionists and Information Clerks Office and Administrative Support Occupations 1,048.5 1,297.0 248.5 23.7 317.1 565.6 High school diploma or equivalent None Short-term on-the-job training Sales Representatives, Wholesale and Manufacturing. Except Technical and Scientific Products Sales and Related Occupations 1,430.0 1,653.4 223.4 15.6 336.5 559.9 High school diploma or equivalent None Moderate-term on-the-job training First-Line Supervisors of Retail Sales Workers Sales and Related Occupations 1,619.5 1,755.5 136.0 8.4 377.7 513.7 High school diploma or equivalent 1 to 5 year None Nursing Aides, Orderlies, and Attendants Healthcare Support Occupations 1,505.3 1,807.2 302.0 20.1 194.1 496.1 Postsecondary non-degree award None None Teacher Assistants Education, Training, and Library Occupations 1,288.3 1,479.3 191.1 14.8 290.5 481.6 High school diploma or equivalent None Short-term on-the-job training Bookkeeping, Accounting, and Auditing Clerks Office and Administrative Support Occupations 1,898.3 2,157.4 259.0 13.6 208.8 467.8 High school diploma or equivalent None Moderate-term on-the-job training Stock Clerks and Order Fillers Office and Administrative Support Occupations 1,787.4 1,808.3 20.9 1.2 444.1 465.0 Less than high school None Short-term on-the-job training Accountants and Auditors Business and Financial Operations Occupations 1,216.9 1,407.6 190.7 15.7 261.4 452.1 Bachelor's degree None None Landscaping and Groundskeeping Workers Building and Grounds Cleaning and Maintenance Occupations 1,151.5 1,392.3 240.8 20.9 203.6 444.4 Less than high school None Short-term on-the-job training General and Operations Managers Management Occupations 1,767.1 1,848.6 81.6 4.6 328.5 410.1 Associate's degree 1 to 5 year None Carpenters Construction and Extraction Occupations 1,001.7 1,197.6 196.0 19.6 212.3 408.3 High school diploma or equivalent None Apprenticeship Secretaries and Administrative Assistants, Except Legal, Medical, and Executive Office and Administrative Support Occupations 2,032.2 2,150.8 118.5 5.8 272.5 391.0 High school diploma or equivalent None Short-term on-the-job training Maintenance and Repair Workers, General Installation, Maintenance, and Repair Occupations 1,289.0 1,431.0 142.0 11.0 237.1 379.1 High school diploma or equivalent None Moderate-term on-the-job training Food Preparation Workers Food Preparation and Serving Related Occupations 813.7 897.9 84.1 10.3 293.0 377.1 Less than high school None Short-term on-the-job training 1 Total job openings represent the sum of employment increases and replacements. If employment change is negative, job openings due to growth are zero and total job openings equal replacements. For more information about occupational replacement needs, see "Estimating Occupational Replacement Needs," on the Internet at www.bls.gov/emp/ep_replacements.htm. 2 Represents the typical education level needed to enter the occupation. 3 Indicates if work experience in a related occupation is commonly considered necessary by employers for entry, or is a commonly accepted substitute for formal types of training. 4 Indicates the typical on-the-job training needed to attain competency in the occupation. NOTE: For more information about the education, work experience, and on-the-job training categories assigned to occupations, see www.bls.gov/emp/ep_education_training_system.htm.