Marital satisfaction is essential to psychological well-being and family stability; however, hospital nurses frequently experience work–family conflict caused by demanding workloads, irregular shifts, and emotional exhaustion. This study aimed to examine the effects of work–family conflict and constructive and destructive couple communication on marital satisfaction and to test the mediating role of couple communication among hospital nurses. A quantitative cross-sectional survey was conducted involving 365 nurses. Data were collected using the Work–Family Conflict Scale, Couple Communication Scale, and ENRICH Marital Satisfaction Scale and were analyzed using partial least squares structural equation modeling (PLS-SEM) with SmartPLS 4.0 and 5,000 bootstrap resamples. The results showed that destructive communication had a strong negative effect on marital satisfaction (? = ?0.602, p < .001), whereas constructive communication had no significant effect (? = 0.041, p = .416). Work–family conflict significantly reduced constructive communication (? = ?0.362, p < .001) but did not significantly affect destructive communication or marital satisfaction. Furthermore, neither constructive nor destructive communication mediated the relationship between work–family conflict and marital satisfaction. The model explained 37% of the variance in marital satisfaction. In conclusion, preventing destructive communication is more critical for sustaining nurses’ marital satisfaction than merely reducing work-related pressures within their marriages.
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