Union membership by occupation, 1999	

Sales occupations					 4.1
Executive, administrative, and managerial		 5.6
Service, excecpt protective service			 8.5
Technicians and related support				11.0
Administrative support, including clerical		12.2
Professional specialty					19.7
Operators, fabricators, and laborers			20.7
Precision production, craft, and repiar			22.4
Protective service					38.2