The Work/Family Conflict Self-Efficacy Scale (WFC-SES) (Cinamon, 2003) was designed to measure an individual's beliefs in her or his ability to manage work-family and family-work conflict. The current study examines the factor structure, reliability, and validity estimates for the WFC-SES. In a sample of 159 working mothers, results showed evidence of satisfactory estimates of internal and external validity. Exploratory analysis suggests that work/family conflict self-efficacy may mediate the relationship between work/family conflict and outcomes such as work and family satisfaction and work stress. The WFC-SES may be used to better understand the role that self-efficacy can play in the relationship between conflict and negative outcomes.