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Using the conservation of resource theory, the purpose of this paper is to investigate the potentially positive influence of job stress on creativity through the resource caravan approach. The influence of job stress directly and as a moderator of psychological capital (PsyCap) is explored. Finally, the influence of stress on creativity is investigated as a boundary condition that impacts on the PsyCap-creativity relationship via job satisfaction.

Relationships were tested on two samples: (1) an international employee cohort (n = 269) and (2) a New Zealand employee sample (n = 475) and similar effects were found in both studies.

PsyCap was found to influence job satisfaction and creativity, with job satisfaction partially mediating this direct effect. Job stress has a positive moderation effect with PsyCap toward creativity, supporting Conservation of Resources theory, which suggests that high PsyCap individuals would have the psychological resources to leverage stress beneficially, making their behaviors more creative. Significant moderated mediation effects indicate complex indirect effects with PsyCap on creativity (via job satisfaction) increasing as job stress gets higher.

This study calls for researchers' attention toward potentially positive influences of stress when considered in combination with high psychological resources. Practical implications focus manager's and leader's attention toward the enhancement of employees' psychological resources for its stress and creativity related benefits.

The findings provide new theoretical support for understanding how stress can positively influence creativity. The use of two samples improves confidence in these findings.

High-performance work systems (HPWSs) are linked to performance, but few studies explore creativity behaviours (CBs). The present study includes job satisfaction as a mediator, and firm size and competitive rivalry as moderators to better understand the context.

Data were collected using a sample of 310 New Zealand managers. Data analysis was a moderated mediation analysis in structural equation modelling using Mplus.

The authors find HPWSs are directly related to CBs and job satisfaction, with job satisfaction fully mediating HPWS effects. Two-way moderation effects show managers in small firms report the highest CBs with high HPWSs, and a significant moderated mediation effect is found with firm size, showing a strong positive indirect effect from HPWS, which diminishes as firm size increases.

HPWSs hold the key to providing managers with opportunities for enhancing their CBs. Exploring the distinct bundles of HPWSs in the present study provides avenues for firms to understand and expand their influence on managers.

The findings of firm size as a boundary condition provides unique insights that aid our understanding of the effectiveness of HPWSs on CBs, and how small-sized New Zealand firms might extract better advantages from HPWSs. A major contribution is testing external firm factors (size and the business environment) to understand what roles they may play on managers’ creativity.