Retail salespersons, cashiers, general office clerks, combined food preparation and serving workers and registered nurses were among the occupations with the highest employment in 2009, the U.S. Bureau of Labor Statistics reports.
Occupations with the lowest employment included watch repairers,astronomers and radio operators.
In addition to the occupations mentioned above, the largest occupations included customer service representatives; elementary school teachers, except special education; and general maintenance and repair workers.
While some of the largest occupations were concentrated in specific industries, others were more widely distributed across industries. For example, although 80 percent of teacher assistants worked in elementary and secondary schools, the largest employer of general office clerks — local government — employed only about 7 percent of this occupation.
Most of the largest occupations were relatively low paying.