The largest occupations for American workers are:
• 1. Retail salespeople 4,485,180 employees
• 2. Cashiers 3,343,470 employees
• 3. Food service including food prep and servers 3,022,880 employees
• 4. Office clerks 2,832,010 employees
• 5. Registered nurses 2,661,890 employees
Source: U.S. Department of Labor, data from May 2013