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Kentaro INABA1), Yasuyuki HOCHI2), Takumi IWAASA3), Motoki MIZUNO4)2)Japan Women’s College of Physical Education, Tokyo, Japan3)National Institute of Occupational Safety and Health, Tokyo, Japan4)Graduate School of Health and Sports Science/Juntendo University Faculty of Health and Sports Science, 360Corresponding author: Kentaro InabaFaculty of Business Administration, Ishinomaki Senshu University1, Shinmito, Minamisakai, Ishinomaki-shi, Miyagi, 986-8580, JapanTEL: +81-225-22-7713(ex.3011)　FAX: +81-225-22-7746　E-mail: kinaba@isenshu-u.ac.jp〔Received　Jan. 26, 2021〕〔Accepted　Jun. 10, 2021〕J-STAGE Advance published date: Aug. 11, 2021Copyright © 2021 The Juntendo Medical Society. This is an open access article distributed under the terms of Creative Commons Attribution License (CC BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original source is properly credited. doi: 10.14789/jmj.JMJ21-OA03Objectives: The purpose of this study is to examine the relationship between psychological safety, job resources, and work engagement among fitness club employees.Materials and Methods: The survey included 427 fitness club employees (147 men and 280 women) in Japan. A web-based questionnaire survey was used in the study. The survey period was from August to September 2020. The team psychological safety scale, the Utrecht work engagement scale (short version with 9 items), and items related to work resources in the Brief Job Stress Questionnaire were used in the study.Results: Correlation and multiple regression analyses revealed that work engagement was significantly positively associated with employees’ job satisfaction and rewarding job, job aptitude, and psychological safety.Conclusions: Results suggest that increasing job satisfaction and rewarding job is important for fitness club employees and an increase in employees’ psychological safety enhances their work engagement. Furthermore, the study indicated that psychological safety is mediated by work engagement and the support provided by colleagues and supervisors.Key words: psychological safety, job resource, work engagement, sports facility, fitness clubJuntendo Medical Journal2021. 67(4), 360-366Original ArticlesJob Resources, and Work Engagement of Fitness Club EmployeesIntroductionIn the current rapidly changing social environ-ment, the tasks required of workers in fitness clubs are becoming more sophisticated and complex every day, necessitating urgent efforts by compa-nies to secure talented human resources. Under uncertain circumstances, involving diversification and sophisticated customer needs, such as home-based fitness and 24-hour fitness, and complicated law revisions such as the Personal Data Protection Act, it is necessary to retain talented human resources by promoting values other than tangible 1)Graduate School of Health and Sports Science, Juntendo University, Chiba, JapanJuntendo University, Chiba, Japanrewards. Furthermore, the high demands of fitness club jobs have been linked to employee burnout1). Burnout is common in human service jobs2), where the need to maintain conflicting emotional and intellectual attitudes towards clients for long periods is one of the causes of burnout. In response, managers and researchers have recently started examining aspects of work engagement. Work engagement is defined as an individual’s ‘positive, fulfilling, work-related state of mind that is charac-terised by vigour, dedication, and absorption’3). The promotion of work engagement has been reported to have various positive effects, such as improve-Relationships between the Psychological Safety,