Drawing from role theory, stress and coping, and caregiving literatures, this paper develops a model of family-role overload involving two forms of caregiver burden (subjective, objective) and two types of maladaptive changes in employee behavior (at work, personal), and hypothesizes that caregiver type (eldercare-only vs. sandwich) moderates all paths in the model. Partial Least Squares structural equation modeling (SEM) supported all hypothesized direct paths. Contrary to our hypotheses, data analysis showed two positive relationships (i.e., objective caregiver burden to family-role overload, family-role overload to maladaptive changes in personal behavior) were stronger for those in the eldercare-only sample than for those in the sandwich sample. Post hoc analysis revealed five significant gender differences in the relationships included in our model. This study contributes to work–family theory by reinforcing the need to consider both caregiver type and gender when researching the challenges faced by employees trying to balance work and caregiving.