摘要：The study investigated job stress and the psychological well-being of library employees. It closely looked into role predictors of job stress namely, role ambiguity and role conflict as well as physical work environment issues; to determine their relationships on the psychological well-being of library staff in selected University libraries in South-West Nigeria. Survey research design was used for the study. The population consisted of 125 library staff. Sampling was total enumeration so as to accommodate all the library staff. Structured questionnaire was employed for data collection. Data collected were analyzed using frequency, percentage counts and mean. The general findings on job stress revealed that respondents had challenges with technology and excess or quantity of workload. Job stress resulting from role ambiguity was that the respondents were not certain of how much authority they have. As regards role conflict, majority of the respondents stated that it did not cause them any job stress. They also perceived their work environment as stress free. Findings from the hypotheses revealed that role ambiguity, role conflict, and work environment have a positive significant relationship on psychological well-being of the respondents. Based on these findings, this study made some recommendations.
