Several studies of telecommuting and working at home have alluded to the blurring line between work and family that can result from such highly integrated work-family arrangements. However, little is known about working parents' perceptions of the integration and blurring of their work and family roles. In this study, the authors created and validated the Work-Family Integration-Blurring Scale using a national sample of business professors raising children in two-parent families. Based on boundary theory and work-family border theory, the authors expected scores on this scale to be associated with the number of hours worked at home and on campus, the number of work-family transitions made when working at home, the presence of distractions when working at home, and the presence of work-family conflict. The scale's significant and moderately high correlations with these variables supported its construct validity. The research implications and practical implications of the findings are discussed.