Anchored in conservation of resources theory, this study considers how employees' experience of job stress might reduce their organizational citizenship behaviors (OCB), as well as how this negative relationship might be buffered by employees' access to two personal resources (passion for work and adaptive humor) and two contextual resources (peer communication and forgiving climate). Data from a Mexican-based organization reveal that felt job stress diminishes OCB, but the effect is subdued at higher levels of the four studied resources. This study accordingly adds to extant research by elucidating when the actual experience of job stress is more or less likely to steer employees away from OCB – that is, when they have access to specific resources that hitherto have been considered direct enablers of such efforts instead of buffers of employees' negative behavioral responses to job stress.