Abstract: To explore the difference of the occupational stress between externals and internals, 235 managers were investigatedby using Generic Job Stress Questionnaier, Occupational Stress Indicator(OSI) and Work Locus of Control Scale(WLCS). It is found that the externals scored significantly higher on personal relationships, recognition, job monotonousness,role ambguity, home/work balance, skill under utilization, job future ambiguity, social support from supervisor and other people at work than the internals, but opposite findings were found on respon sibility for people and things, job satisfaction, mental health and self-esteem. The results of this study suggested that the externals experienced more stressthan the intenals, externals were more likely to be affected by stressors, which leaded to more serious strain outcomes.