abstract: 'Some previous studies of the relationship between women''s labor force participation and household income inequality indicate that the promotion of the former has an equalizing effect on the latter; other studies insist that the promotion of women''s labor force participation has a widening effect on household income inequality by way of the tendency toward assortative marriage. Hence, the relationship between women''s labor force participation and household income inequality is unclear in the literature. This study aims to clarify the mechanism through which the interaction between household income and marriage produces social inequality by using mathematical and simulation-based approaches. The presented findings suggest that the promotion of women''s labor force participation has a temporary widening effect on household income inequality, but an attenuating effect in the long run. They also state that assortative marriage itself has no widening effect on household income inequality, but rather an accelerating effect on widening inequality. Finally, by applying the model of that mechanism to Japan, I examine changes in household income inequality in that country.' affiliation: 'Sudo, N (Corresponding Author), Gakushuin Univ, Dept Polit Studies, Fac Law, Toshima Ku, 1-5-1 Mejiro, Tokyo 1718588, Japan. Sudo, Naoki, Gakushuin Univ, Dept Polit Studies, Sociol, Tokyo, Japan.' author: Sudo, Naoki author-email: naoki.sudo@gakushuin.ac.jp author_list: - family: Sudo given: Naoki da: '2023-09-28' doi: 10.1093/sf/sox011 eissn: 1534-7605 files: [] issn: 0037-7732 journal: SOCIAL FORCES keywords-plus: 'FAMILY INCOME; EARNINGS INEQUALITY; WIVES EARNINGS; WORKING WIVES; UNITED-STATES; EMPLOYMENT; COUNTRIES; POVERTY' language: English month: JUN number: '4' number-of-cited-references: '37' orcid-numbers: Sudo, Naoki/0000-0003-3589-9418 pages: 1427-1449 papis_id: f84829044acb743b5c4f8f116d92cdce ref: Sudo2017effectswomens researcherid-numbers: Sudo, Naoki/AAM-8222-2021 times-cited: '13' title: 'The Effects of Women''s Labor Force Participation: An Explanation of Changes in Household Income Inequality' type: Article unique-id: WOS:000401773700048 usage-count-last-180-days: '0' usage-count-since-2013: '16' volume: '95' web-of-science-categories: Sociology year: '2017'