Auxiliary benefits are paid to the spouse, former spouse, survivor, child, or parent of the primary earner. Auxiliary benefits are determined as a percentage of the primary earner's PIA, subject to a maximum family benefit amount. For example, the spouse of a retired or disabled worker may receive up to 50% of the worker's PIA, and the widow(er) of a deceased worker may receive up to 100% of the worker's PIA. In December 2017, about 25.4 million elderly (aged 65 and older) women received Social Security benefits, including 13.3 million women who received only retired-worker benefits, 2.1 million women who were entitled solely as the spouse of a retired worker, 3.2 million women who were entitled solely as the survivor of a deceased worker, and 6.7 million women who were dually entitled to a retired-worker benefit and a spousal or survivor benefit. Women are more likely to take employment breaks to care for children or parents, and thus have a lower labor force participation rate than men. Breaks in employment result in fewer years of contributions to Social Security and employer-sponsored pension plans and thus lower retirement benefits. Social Security benefits are designed in a way that can result in inequities between households with similar earning profiles. A beneficiary who qualifies for both a retired-worker benefit and a spousal benefit does not receive both benefits in full. Instead, the spousal benefit is reduced by the amount of the retired-worker benefit; this effectively means the beneficiary receives the higher of the two benefit amounts. Because of this, a two-earner household receives lower combined Social Security benefits than a single-earner household with identical total Social Security-covered earnings, despite paying more in Social Security taxes. Among women aged 65 and older, about 13.7% of divorced Social Security beneficiaries and 18.0% of never-married Social Security beneficiaries have total incomes below the official poverty line in 2017. Women with children under the age of 18 have increasingly entered the labor force in recent decades (see Figure 3 ). For example, a woman who was never employed but is married to a man with high Social Security-covered wages may receive a Social Security spousal benefit that is higher than the retirement benefit received by a single woman, or a woman who was married less than 10 years, who worked a full career in a low-wage job. When spousal and survivors benefits were first established, most households consisted of a single earner—usually the husband—and a wife who cared for children and remained out of the paid workforce. As a result, benefits for nonworking spouses were structured to be relatively generous. For example, some proposals would increase the averaging period from 35 to 38 years. Conclusion

Although more women have qualified for Social Security benefits based on their own earning records in recent decades, Social Security auxiliary benefits continue to play a crucial role in improving income security for older women, as well as for young surviving spouses and children of deceased workers. In addition, auxiliary benefits do not reach certain groups, such as persons who divorced before 10 years of marriage or mothers who never married.
Social Security auxiliary benefits are paid to the spouse, former spouse, survivor, child, or parent of a Social Security-covered worker and are equal to a specified percentage of the worker's basic monthly benefit amount (subject to a maximum family benefit amount). For example, the spouse of a retired worker may receive up to 50% of the retired worker's basic benefit and the widow(er) of a retired worker may receive up to 100% of the retired worker's basic benefit.
When auxiliary benefits were first established, most households consisted of a single earner—usually the husband—and a wife who cared for children and remained out of the paid workforce. As a result, benefits for nonworking spouses were structured to be relatively generous. A woman who was never employed but is married to a man with high Social Security-covered wages may receive a Social Security spousal benefit that is higher than the retirement benefit received by a single woman, or a divorced woman who was married less than 10 years, who worked a full career in a low-wage job.
In recent decades, this household structure has changed in part because women have entered the workforce in increasing numbers. The labor force participation rate of women with children under the age of 18 increased from 47% in 1975 to 70.8% in March 2016. As a result, many women now qualify for Social Security benefits based on their own work records. Women are, however, more likely than men to take breaks in employment to care for family members, which can result in fewer years of contributions to Social Security and employer-sponsored pension plans.
Beneficiaries who qualify for multiple benefits do not receive both benefits in full, however. For example, for a beneficiary eligible for his or her own retired-worker benefits as well as spousal benefits, the spousal benefit is reduced by the amount of the retired-worker benefit. The beneficiary receives a reduced spousal benefit (if not reduced to zero) in addition to his or her retired-worker benefit. This effectively means the beneficiary receives the higher of the two benefit amounts. Because of this, a two-earner household may receive lower total Social Security benefits than a single-earner household with identical total Social Security-covered earnings.
Another change since 1939 has been an increase in the number of men and women who remain single or who have divorced. Persons who have never been married, or divorced before 10 years of marriage, do not qualify for Social Security spousal or survivors benefits under current law.
Proposals to modify the Social Security auxiliary benefit structure are often motivated by desire to improve adequacy for certain beneficiaries, or equity between a two-earner household and a one-earner household with similar earning profiles. For example, some proposals address the adequacy of benefits for certain groups of beneficiaries, such as elderly and widowed women. Although Social Security plays an important role in the retirement security of aged women, about 13.9% of widowed women aged 65 or older, 15.8% of divorced elderly women, and 21.5% of never-married elderly women have family incomes below the official poverty line in 2017.