Abstract
This study assessed the effectiveness of worksite- based health risk appraisal (HRA) programs, with and without supplemental educational materials on safety belt use, for increasing observed belt use of program participants. HRA programs were offered by county public health departments to employees of four manufacturing plants in two states, one with mandatory safety belt use laws, the other without such laws. There was no significant difference between safety belt use increases in states with and without mandatory use laws. The observed rates of use were consistently only one- half the self- reported rates.