The influence of stress on employee health has recently increased. The present study aims to clarify the relationship between eating behavior and stress as factors in obesity, which has become a central issue for lifestyle-related disease prevention. We surveyed 220 male employees between February and March 2014 and examined relationships among eight categories of eating behavior in four groups: obesity and high-stress (Group I), obesity and low-stress (Group II), non-obesity and high-stress (Group III) and non-obesity and low-stress (Group IV). We previously compared the scores for each category of four groups with those of a group with normal weight using t-tests. Here, we compared our earlier findings with those from the four groups described above. The responses showed that Groups I and III differed significantly in all categories related to eating behavior. This indicated that high stress was associated with changes in eating behavior and that some respondents had problems with eating behaviors regardless of whether they were obese. These results indicate that health guidance is needed in the future to understand the stress levels of obese individuals.