For the purpose of grasping the actual condition of low back pain in women workers, 166 women in two neighboring factories were studied using questionnaire, 60% of the workers complained of low back pain. and 63% of them responded that their low back pain come from their job. About the severity, 77% marked the moderate, and 15% said absences owing to the pain. But 60% of them have not sought medical help. The low back pain occurred mainly in the workers of sitting posture and in the workers of treating heavy objects. And the workers who have worked over three years are dominant(44%) in the pain group. Comparing the pain group with the non-pain group, two variables - whether the worker treats heavy materials or not, and how heavy the materials are - showed statistically significant differences. So. there must be concern over the low back pain of women workers. In operation allocation. treating heavy objects and lifting up should be carefully considered. And for the prevention of low back pain. the workers need education and pain exercise.