Drawing on the conservation of resources (COR) theory and congruence theory, this study aims to investigate the influence of psychological capital (PsyCap) and person-job fit (PJ fit) on work–family conflict (WFC), family–work conflict (FWC) and job performance (JP), especially the moderating effect of marital status on hypothesized relationships between two directions of conflicts in the work-family interface and JP. Utilizing a two-stage design, this study surveyed 312 flight attendants employed by two international airline companies in Malaysia and used the structural equation modeling technique to test the hypothesized relationships. Findings showed that PsyCap could significantly alleviate two directions of WFC simultaneously and promote employees’ JP. PJ fit was also identified to be an effective mitigator of WFC and FWC; however, a significant association between PJ fit and JP has not been found in this study. The findings further suggested that both WFC and FWC could mediate the association between PsyCap and JP. In addition, the fact that marital status resulted in disparity in the formation of JP was also evidenced. Airline companies should pay more attention to the positive impact of individual psychological determinants, such as PsyCap and PJ fit, which can effectively alleviate various issues in the work–family interface, thereby improving employees’ JP.

The novel coronavirus (COVID-19) has inflicted unprecedented damage on the tourism industry. However, the psychological health fallout of COVID-19 on tour guides has not received empirical attention yet. Therefore, the present study aims to examine how psychological capital (PsyCap) improve tour guides’ psychological wellbeing (PWB), the mediating effects of work-family conflict (WFC), family-work conflict (FWC), work-family facilitation (WFF) and family-work facilitation (FWF), and the moderating effect of perceived organizational support (POS). For this quantitative research, the data were collected from 276 tour guides in China. The results indicate that PsyCap significantly mitigates two directions of work-family conflict and intensifies two directions of work-family facilitation in order to promote tour guides’ PWB. Furthermore, POS moderates the direct effects of two directions of conflict and facilitation on PWB and also moderates the indirect effects of PsyCap on the aforesaid outcome via two directions of conflict and facilitation. Theoretical and practical implications, limitations and future research directions are provided.