Independent contractors and workers in traditional arrangements, by occupation, February 1999 Percent Occupation Independent contractors Traditional workers Executive, Administrative, and managerial 20.5 14.6 Professional specialty 18.5 15.5 Technicians and related support 1.1 3.3 Sales occupations 17.3 12.0 Administrative support, including clerical 3.4 15.0 Service occupations 8.8 13.7 Precision production, craft, and repair 18.9 10.5 Operators, fabricators, and laborers 7.0 13.6 Farming, forestry, and fishing 4.4 2.0