Mental health, job burnout, and job stress have an important role in the wellbeing of nurses and their services. The present study aimed to investigate the relationship between job stress and burnout and mental health with the mediation of psychological capital. Methods: The participants included 250 nurses from Bojnourd City, Iran who were selected by the available sampling method. The data were analyzed by Structural Equation Modeling (SEM) in SPSS version 23 and AMOS version 24. Results: Structural equation modeling analysis confirmed the proposed pattern. The results showed the direct effect of job and indirect effect of stress through psychological capital on the mental health and burnout. Conclusion: According to the results, hospitals and medical centers can benefit from psychological capital and its components to reduce job stress and burnout, and to increase mental health.

Objective: Successful and healthy aging is the most critical outcome and policy of decisions in the elderly population. Paying attention to the elderly as well as their life satisfaction and wellbeing can be beneficial for this stratum. Among the influencing characteristics of successful aging and life satisfaction in the elderly is their ability to having active social relationships and feeling useful. Accordingly, the ability to regulate emotions can affect wellbeing and life satisfaction and reduce procrastination in the elderly. Therefore, the present study aimed to investigate the relationship between procrastination, Psychological Wellbeing (PWB), and Life Satisfaction (LS) mediated by Emotion Regulation (ER) in the elderly. Methods: The study participants included 260 elderly in Tehran City, Iran, who were selected by convenience sampling method. The research tools included the Satisfaction With Life Scale (SWLS), Ryff’s Psychological Wellbeing (PWB) Scale, the Tuckman Procrastination Scale (TPS), and the Emotion Regulation Questionnaire (ERQ). Results: The obtained results signified the mediating role of ER in the direct and indirect relationship between procrastination and LS, and enhanced PWB in the explored elderly. Structural equation modeling analyses data demonstrated the fit of the proposed model. Conclusion: Solutions can be provided to reduce procrastination and increase offer skills in the elderly; accordingly, their LS and PWB could be improved by practical training and holding workshops in this respect.