This study tests the direct relevance of justifications and social comparisons (predictors of perceptions of fairness) on different types of household labour distribution, and the importance of masculinity ideology and neosexism on these variables. The participants were heterosexual dual-earner couples. Our results showed that both men and women use more justifications when their housework distribution is not equal, but only women use social comparisons associated with the ways of distributing domestic work. In addition, we observe that, in both men and women, justifications are related to a traditional masculine ideology, but a different model appears in relation to comparisons which are associated with neosexism in men and with traditional masculine ideology in women. Implications and suggestions for future research are discussed.