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Development of a Job Exposure Matrix.

Sieber-WK; Sundin-DS; Young-RO
NIOSH 1986:31-34
A method for relating individual occupations or industries with potential on the job exposures was described. The method, known as the Job Exposure Matrix (JEM), was being developed by NIOSH and used data on potential exposures categorized according to occupation and industry that were obtained in the National Occupational Hazard Survey (NOHS) of 1972 to 1974. Data for 8342 hazards observed in establishments representing 639 standard industrial codes and 504 occupations were included in the NOHS. The JEM was a three dimensional matrix having axes for industry, occupation, and hazard. It utilized a three level hierarchical structure for presenting data from the NOHS. The first level provided information across industries, the second information about occupations within an industry, and the third level provided information about potentially hazardous exposures in the industry or occupation group. The JEM consisted of a computer file containing 535,771 records stored on magnetic tape. It was noted that a JEM system consisting of the JEM file, documentation, and selection programs to access the JEM will be available for use on either a mainframe computer or microcomputer. Uses of the JEM were summarized. These included identifying workers potentially exposed to a class of hazards, grouping workers with common potential exposures for surveillance purposes, identifying previously undetected potential exposures, and increasing the specificity of exposure classifications for epidemiological surveys.
NIOSH-Author; Job-analysis; Occupational-exposure; Occupational-health; Information-systems; Data-processing; Exposure-levels; Occupational-hazards;
Publication Date
Document Type
Conference/Symposia Proceedings;
Fiscal Year
Source Name
The Changing Nature of Work and Workforce, Proceedings of the Third Joint US-Finnish Science Symposium, Frankfort, Kentucky, October 22-24, 1986, NIOSH, Cincinnati, Ohio
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division