To advance the understanding of socio‐relational sources of employee creativity, we investigate the effect of a good marriage on workplace creativity. Drawing on family–work enrichment theory, we propose and test the idea that a satisfying marriage boosts a spillover of psychological resources from family to work that enhances employees' workplace creativity. Using survey data collected from 548 spouse–employee–supervisor triads, we find an indirect positive relationship between employees' marital satisfaction and workplace creativity through a spillover of psychological resources from family to work. We also find that this spillover is most pronounced when both employees and their spouses are satisfied with their marriage. The results further demonstrate that the indirect effect of marital satisfaction on workplace creativity through the spillover of psychological resources is significant for employees with a low creative personality, but not for those with a high creative personality. Copyright © 2017 John Wiley & Sons, Ltd.