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The purposes of this study were to develop a job stress measurement tool and to identify the job stress according to the characteristics of worker and work condition at the small and medium-sized plants. Data were collected through face-to-face survey for April 뾏ay, 1997. Subjects were 180 workers at 36 small and medium-sized plants located near Scoul.

l)ata were analyzed by item analysis, factor analy- sis, and ANOVA. The results were as follow:

1, Number of items of job stress measurement were 33 and Cronbach뭩 a was .9262 except 13 items with low values of Cronbach뭩 coefficient. Factor analy- sis was done in order for construct validity and 8 factors were extracted and cumulative percent of variance was 65,6%.

2. The job stress scores of male, the younger, 2-shift workers, and over-time workers were signifi cantly higher than those of female, the older, 1-shift workers, and 48 hour workers per week.

3. There were no significant difference between job stress scores and the groups by number of worker, and the types of manufacturing.

The stress measurement tool is valid and very re- liable to measure worker뭩 stress. Furthermore, the job stress managent program for health promotion of the workers at the vulnerable work condition is needed more and more.