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Technical Assistance Report No. TA-79-060-843, Blue Shield of California, San Francisco, California.
Murray WE; Moss CE; Parr WH; Cox C; Smith MJ; Cohen BG; Stammerjohn LW; Happ A
Cincinnati, OH: U.S. Department of Health, Education, and Welfare, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, TA 79-060-843, 1979 Jan; :1-61
Health hazards of video display terminals (VDT) were assessed at Blue Shield of California (SIC-6321), San Francisco, California in November, 1979. Radiation levels from VDTs were well below current exposure standards. Hydrocarbons ranged from 1.4 to 2.0 parts per million (ppm) in the VDT areas, well below NIOSH standards of 35ppm. Questionnaires from 77 VDT operators and 40 other workers were amassed. Fifty percent of the operators reported visual complaints. Psychological complaints were reported by 50 percent of operators in 7 of 10 categories, and 4 of 11 gastrointestinal complaints were reported by 50 percent of operators. No disease states were reported by a significant number of operators. Measured illumination was generally acceptable, but glare was a problem at many VDT stations. Problems were seen with the physical dimensions of the work stations, excessive keyboard height, and screen height. The authors recommend adjustable keyboards and screens for height, brightness, and contrast. Operator chairs should have adjustable heights and back rests. Lighting should be set to 500 to 700 lux, and glare should be eliminated. Rest breaks of 15 minutes should be taken every 2 hours for moderate demand work or every hour for high demand workloads.
NIOSH-Author; NIOSH-Technical-Assistance-Report; Hazards-Confirmed; Office-workers; Occupational-exposure; Employee-exposure; Health-hazards; Eye-disorders; TA-79-060-843; Region-9
Field Studies; Technical Assistance
NTIS Accession No.
National Institute for Occupational Safety and Health
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division