•Based on a macro perspective of social exchange theory, we presented an integrated model of collective PsyCap as related to shared leadership, organizational commitment, and creativity.•We collected data at multiple time periods in the hotel workplace to reduce the potential common method variance.•We argued that shared leadership can be able to formulate a sharing and supportive culture within a social structure; thus, not only does it promote commitment and creativity but it also highlights the mediating effect of collective PsyCap. Drawing from a macro perspective of social exchange theory, the current study aims to examine the relationships between shared leadership, collective psychological capital, organizational commitment, and creativity at a collective level in Taiwan’s hotel industry. We adopt three-stage time-lag design with a three-week in each stage to collect data. Data stem from 52 hotels and comprise 267 employees were used to test the hypotheses through structural equation modeling. We found that, the data fit the hypothesized model well, and collective PsyCap partially mediates the relationship between shared leadership and both organizational commitment and creativity. From these results, theoretical and practice implication are offered. We discuss the theoretical and practical implications of the findings and offer recommendations for future research.