This study aims to provide a direction for human resource management as part of the crisis response plan for the Korean banking industry in response to the rapidly changing industrial structure. The study aimed to verify the causal relationship between interpersonal skills and problem-solving skills among job performance abilities and job crafting among banking industry workers, and to examine the mediating effect of self-development desire between job performance abilities and job crafting. For this study, a questionnaire was administered to 260 employees of domestic commercial banks, and the collected survey data was analyzed using SPSS (Ver. 24.0). As a result of this analysis, first, the interpersonal skills of banking workers were found to have a positive (+) effect on job crafting, second, the problem-solving skills of banking workers were found to have a positive (+) effect on job crafting, third, the desire for self-development was found to have a significant complete mediating effect between interpersonal skills and job crafting, and fourth, the desire for self-development was found to have a significant partial mediating effect between problem-solving skills and job crafting. The implications of this study are as follows: First, it is necessary to enhance interpersonal skills and problem-solving skills, which are sub-components of the job performance ability of banking workers, and to promote job crafting to improve innovation and efficiency in the banking industry; second, it is necessary to strengthen the human resource capacity of the organization by providing self-development programs that improve interpersonal skills and problem-solving skills; and third, it is necessary to create an organizational culture that encourages employees to activate job crafting by enhancing the desire for voluntary self-development among banking workers, as job crafting can contribute not only to individual growth but also to innovation and performance improvement of the organization. This study has academic distinction in that it conducted research on job crafting by limiting the research subjects to banking workers, clarified the causal relationship between the research subjects’ job performance ability and job crafting, and verified the mediating effect of the desire for self-development between job performance ability and job crafting, thereby providing implications.