Our study examines the link between adolescents’ skills (mathematics, reading literacy, and physical fitness) and the frequency with which they participate in housework. We utilize a large longitudinal dataset of Hungarian adolescents (N = 37,461), making this, to our knowledge, the first European study on this topic. We use a rich set of background variables and fixed effects estimators to account for time-varying and time-invariant individual characteristics. Contrary to most of the literature we find cognitive skills to have no practically significant relationship with housework frequency. This discrepancy can be attributed to methodological choices (i.e., the use of the fixed effects estimator) or sociocultural differences in housework duties between the regions studied. Investigating heterogeneous effects on cognitive skills, we find girls’ literacy scores to be slightly affected by daily housework (-.02 SD), unlike boys’. The difference is more pronounced for children with highly educated parents and working mothers (-.06 SD). Substantially lower mathematics scores are detected for children who almost never participate in housework and have unemployed mothers (-.19 SD). Children who have chores to do almost every day and whose mothers are on parental leave also show signs of worsened mathematics ability (-.1 SD). Fitness levels of students who rarely engage in housework are significantly lower (-.04 SD), suggesting that some participation in household tasks contributes to physical well-being. This effect is pronounced for children of tertiary-educated parents (-.05 SD). Overall, findings suggest that household chores are cognitively neutral for most adolescents, have small physical-fitness benefits when performed in moderation, and become academically detrimental only at the extremes within specific family contexts.