The purpose of this study was to examine the effect of working hours and recreation hours, which account for the largest part of the work of urban railroad engineer, on the prvention of human errors through input to the job. For this, the following research questions were set up. First, how fo working hours and recreation hours affect the income to work in performing a job? Second, in performing a job, dos the import of work have an affect as a mediating role between working hours and recreation hours and human error prevention?
In order to achieve the research goal, the entire urban railroad operating institution was selected, and a survey was conductedby selecting 300 people as a sample of the memebers of the organization who are working as urban railroad engineers, and 275 copies were collected from a total of 7 institutions(91.6% answer rate). Of the collected questionnaires, 236 copies(78.6%) were used for analysis, excluding 39 copies(13%) of unfaithfulness.
In the first step for this study, frequency and percentage were calculated using SPSS and AMOS 26.0 programs. In the second step, descriptive statistics (average, standard deviation) were calculated to identify variables in order to grasp the working hours, recreation hours, job commitment and human error prevention level of the engineer. In the third step, t-test and ANOVA chacks were conducted to verify the difference in the level of prevention of human error and working hours, recreation hours, job income, and human error
according to demographic characteristics. In the fourth step, exploratory false-person analysis (EFA) was performed to verify the validity of the measurement variables, and Cronbach’s a coefficient was calculated to verify the reliability. In the final and fifth step, path analysis, an extended form of multiple regression analysis, was conducted to verify the hypothesis to establish the influence relationship between the research variables, and the significance of the mediating effect was verified through the bootstrap method. The significance level of the above statistical analysis and hypothesis test was conducted at a =.05(Kline, 2010).
The results of this study are as follows. First, the verification result that predicted that the working hours of the engineer will have a direct positive(+) effect on the prevention of human errors, the research hypothesis 1 was rejected because the working hours of the engineer did not have a significant effect on the prevention of human errors. Therefore, it was found that the working hours of an engineer do not directly affect the prevention of human errors, but rather have an affect on the prevention of human errors through the mediation of job commitment. Second, it was found that the recreation time of the engineer has a significant positive(+) effect on the prevention of human error directly, and the more recreational time of the institution feels appropriate, the higher the level of human error prevention is. Third, it was found that the working hours and recreation hours of an engineer have a significant positive effect on job commitment, and the more they feel that working hours are appropriate, the higher their job satisfaction is. Fourth, it was found that the engineer’s job commitment had a significant positive effect on the prevention of human error, and the degree of the engineer’s commitment to the job had a positive effect on the level of human error prevention.
Finally, the research showing that as a result of verifying the mediating effect of job commitment in the relationship between the engineer’s working hours and recreation hours and the prevention of human errors, the indirect effect of the engineer’s working hours and recreation hours- job commitment- human error prevention was found to be significant. Therefore, it means that the working hours and recreation hours of the engineer have a lot of influence on the job commitment to prevent human error. Based on the result of this study, the implications of research in the practical and academic fields, and suggestions for the study of common place were discussed.